Written by Julia Forbes, Lead Product Tester
For many people, a king-size mattress represents a dreamy upgrade. These beds give you loads of room to stretch out, even if you share your sleeping space with a partner, kids, or pets.
You’ll be presented with a lot of choices when upping your bed size to a king. Generally, though, the best king-size mattresses will be evenly supportive across the entire surface, as well as soft or firm enough to suit your comfort preferences.
With help from my fellow mattress testers, I’ve created a list of our top-rated king-size beds. Their different features should cover a wide range of needs so you can find a royally perfect match.
Our Pick for the Best King Mattress is…
The Saatva Classic. With three available firmness options and two heights to choose from, this king-size bed is quite customizable. It also has two innerspring units instead of one to ensure long-lasting support, and incredibly strong edges so you can really spread out.
Our Best King-Size Mattress Picks
- Saatva Classic – Editor’s Pick
- Nectar – Best Memory Foam King-Size Mattress
- Helix Midnight – Best King-Size Hybrid Mattress
- DreamCloud Premier – Best King-Size Mattress for Side Sleepers
- Brooklyn Bedding Signature Hybrid – Best King-Size Mattress for Combination Sleepers
- The WinkBed – Best King-Size Mattress for Back Pain
- Nolah Evolution – Best King-Size Mattress for Couples
- Helix Dawn – Best Firm King-Size Mattress
- Bear Star Hybrid – Best Cooling King-Size Mattress
- Titan Plus – Best King-Size Mattress for Heavy People
Our Video Review of the Best King Mattresses
Compare the Best King Beds of 2024
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| Saatva Mattress | Nectar Mattress | Helix Midnight Mattress | DreamCloud Premier Mattress | Brooklyn Bedding Signature Hybrid Mattress | WinkBed Mattress | Nolah Evolution Hybrid Mattress | Helix Dawn Mattress | Bear Star Hybrid Mattress | Titan Plus | |
| Rating | ||||||||||
| Firmness | Multiple firmness options | Medium-firm: 6.5/10 | Medium-firm: 6/10 | Medium: 5.5/10 | Multiple firmness options | Multiple firmness options | Multiple firmness options | Firm: 7.5/10 | Medium-firm: 6/10 | Firm: 8/10 |
| Material | Innerspring | Foam | Hybrid | Hybrid | Hybrid | Hybrid | Hybrid | Hybrid | Hybrid | Hybrid |
| Cooling | — | — | — | — | — | — | ||||
| Warranty | Lifetime warranty | Lifetime warranty | 10-year warranty | Lifetime warranty | 10-year warranty | Lifetime warranty | Lifetime warranty | 10-year warranty | Lifetime warranty | 10-year warranty |
| Shipping | Free white glove delivery | Free shipping | Free shipping | Free shipping | Free shipping | Free shipping | Free shipping | Free shipping | Free shipping | Free shipping |
| Trial Period | 365 nights | 365 nights | 100 nights | 365 nights | 120 nights | 120 nights | 120 nights | 100 nights | 120 nights | 120 nights |
| Best For | Back Sleepers, Stomach Sleepers, Back Pain, Hot Sleepers, Seniors | Back Sleepers, Back Pain, Stomach Sleepers, Side Sleepers, Couples | Couples, Back Sleepers, Side Sleepers | Back Sleepers, Hot Sleepers | Couples, Back Sleepers, Hip Pain | Back Sleepers, Stomach Sleepers, Back Pain, Hot Sleepers, Side Sleepers, Hip Pain, Seniors | Side Sleepers, Back Sleepers, Hip Pain, Seniors | Back Sleepers, Stomach Sleepers, Couples | Joint Pain, Side Sleepers, Back Sleepers, Hot Sleepers | Back Sleepers, Stomach Sleepers, Back Pain, Hip Pain, Seniors |
How We Picked the Best King-Size Mattresses
My fellow testers and I review mattresses by testing them out comprehensively in our studio. This way, we’re able to get hands-on, first-person experience from a variety of sleepers with different body types, primary sleeping positions, and overall preferences.
We then summarize our findings in easy-to-understand language to give you a clear idea of how each bed performs.
When it comes to choosing the best king mattresses, we focused on a few key categories during testing, including reliable support across the whole surface of the bed and features that benefit couples.
What We Want to See in a King Mattress
Support Over a Large Surface Area
Every bed on this list received at least a 4 out of 5 in the support category during testing. This category is crucial for king-size beds because of their impressive width. You want a mattress with consistent support across the entire surface, rather than one that sags or pokes in certain spots.
Couple-Friendly Features
Chances are, if you’re looking for a king-size mattress, you’ll be sharing the bed with a partner or a pet (or both!). The beds below performed well in the categories most relevant to couples, such as motion isolation, edge support, and responsiveness.
It’s important to note that some of these elements come at the cost of others. For example, a bed with great bounce—which can help facilitate intimate activities—probably won’t have the best motion isolation. So, you should decide which features matter the most to you and your partner while browsing.
Good Value
A king-size mattress is a big investment, and even the cheapest options are going to start around $1,000 minimum. The beds we’ve chosen balance high quality with affordability: most of them cost less than $2,000 for a king. Of course, when discounts are running, these prices drop lower still.
The 10 Best King-Size Mattresses, Reviewed
Saatva Classic – Editor’s Pick
Saatva Mattress
Coil-on-coil structure gives this elevated innerspring bed a luxurious feel and versatility.
$400 off $1,000 with mattress purchase
Material
Innerspring
Trial Period
365 nights
Shipping Method
Free white glove delivery
Firmness
Multiple firmness options
Warranty
Lifetime warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Seniors
This bed is perfect for senior sleepers.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.
Stomach Sleeping
Ideal for lightweight and average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Saatva Mattress
Coil-on-coil structure gives this elevated innerspring bed a luxurious feel and versatility.
Material
Innerspring
Warranty
Lifetime warranty
Firmness
Multiple firmness options
Shipping Method
Free white glove delivery
Trial Period
365 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Seniors
This bed is perfect for senior sleepers.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.
Stomach Sleeping
Ideal for lightweight and average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Saatva Mattress
Coil-on-coil structure gives this elevated innerspring bed a luxurious feel and versatility.
Material
Innerspring
Firmness
Multiple firmness options
Trial Period
365 nights
Warranty
Lifetime warranty
Shipping Method
Free white glove delivery
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Seniors
This bed is perfect for senior sleepers.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.
Stomach Sleeping
Ideal for lightweight and average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
The Saatva Classic at a Glance
The Saatva Classic is marketed as a “luxury innerspring” mattress, and we agree with that label. Notably, it contains two coil units: an upper one with pocketed coils, and a lower one with interconnected coils. Together, they provide unflagging support inside a bed that can be customized to to suit your preferred firmness and height.
What’s Inside the Saatva Classic?
You can order your Saatva Classic in one of two heights: 11.5 or 14.5 inches. You’ll also be able to choose between Plush Soft, Luxury Firm, and Firm models.
- Euro Pillow Top. Soft foam dressed in an organic cotton cover, with firmer quilting in the middle to lift your lumbar spine.
- Lumbar Crown. A strip of foam that stretches across the middle of the bed, further boosting the lumbar region.
- First Innerspring Unit. Individually wrapped coils are stronger in the middle, where you’re likely putting the most pressure on the bed.
- Spinal Wire. Positioned amidst the springs, this wire prevents sagging and helps keep your back properly aligned.
- Second Innerspring Unit. Interconnected coils that permit lots of airflow and should stand up to years of use.
- Foam Rails. Around the edges of the bed, a frame of high-density foam buttresses the sides.
Our Thoughts After Testing the Saatva Classic
I gave this mattress the winning spot in this roundup because it’s an all-around champion when it comes to support, no matter where you’re lying on the bed.
The dual innerspring units lifted my midsection so that my spine felt aligned in all sleeping positions, including on my stomach.
The edge support is likewise phenomenal, perhaps because the sides are bolstered by thick foam (not reinforced springs like we see in most hybrids).
This is a key factor for some couples sharing a king-sized bed—it allows them to spread out without worrying about the edges dipping.
My only concern when it comes to ordering a king-sized Classic is motion isolation. You can feel big movements made by another person from across the bed, so we awarded only 2 out of 5 points in this performance category.
Saatva Classic Mattress Dimensions
| Height | Number of Layers | Product Width | Product Length |
| 14.5″ | 5 | 76″ | 80″ |
Customer Reviews of the Saatva Classic
The Classic has garnered more than 3,000 online reviews on Saatva’s website, and sits at 4.8 out of 5 stars. Negative reviews tend to highlight the fact that it can take a bit of time to get your made-to-order bed delivered. But one-star reviews make up about 1% of the review pool, and most customers love the easy delivery process as well as the mattress’s effectiveness at helping with back pain.
Interested in more details? See our complete review of the Saatva Classic or our roundup of the best mattresses for 2024.
Nectar– Best Memory Foam King-Size Mattress
Nectar Mattress
Nectar offers the deeper hug of a traditional memory foam bed but with updated cooling and a Forever warranty.
Material
Foam
Trial Period
365 nights
Shipping Method
Free shipping
Firmness
Medium-firm: 6.5/10
Warranty
Lifetime warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for heavyweight side sleepers.
Stomach Sleeping
Ideal for lightweight and average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Nectar Mattress
Nectar offers the deeper hug of a traditional memory foam bed but with updated cooling and a Forever warranty.
Material
Foam
Warranty
Lifetime warranty
Firmness
Medium-firm: 6.5/10
Shipping Method
Free shipping
Trial Period
365 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for heavyweight side sleepers.
Stomach Sleeping
Ideal for lightweight and average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Nectar Mattress
Nectar offers the deeper hug of a traditional memory foam bed but with updated cooling and a Forever warranty.
Material
Foam
Firmness
Medium-firm: 6.5/10
Trial Period
365 nights
Warranty
Lifetime warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for heavyweight side sleepers.
Stomach Sleeping
Ideal for lightweight and average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
The Nectar at a Glance
Years after its launch, Nectar’s original memory foam bed remains one of the reigning champions of the online mattress world. Without springs (and their heftier price point), it offers a medium firmness level and a supportive foundation paired with amazing pressure relief.
What’s Inside the Nectar?
The Nectar is 12 inches high and has a top and lower cover with three CertiPUR-US® certified foam layers in between.
- Layer 1 – Cover. Features polyethylene fibers that should help prevent overheating.
- Layer 2 – Gel Memory Foam (2 inches). Conforms to your silhouette and cradles sensitive pressure points.
- Layer 3 – Transitional Foam (3 inches). A bit bouncier than the foam above, reducing the risk of a “stuck” feeling as you move around in bed.
- Layer 4 – ActiveSupport Foam (7 inches). Serves as a firm base.
Our Thoughts After Testing the Nectar
This is an affordable option that, despite its lack of springs, finds a rare harmony between softness and support. Its cushiony surface is a special treat for achy joints even as its denser base foam pushes for proper spine alignment.
I felt lots of support, but it’s important to note that I’m an average-weight sleeper. Our heavyweight tester, Spencer, didn’t have enough to work with, especially on his stomach.
Those eyeing a king-sized Nectar to share will also be happy to know that this bed earned a perfect 5 out of 5 for its motion isolation. Its foam layers readily trap the ripples caused by someone turning over or even getting out of bed. However, those same foam layers can hold onto heat—we gave this mattress a 2.5 out of 5 in the cooling category.
Nectar Mattress Dimensions
| Height | Number of Layers | Product Width | Product Length |
| 12″ | 5 | 60″ | 80″ |
Customer Reviews of the Nectar Mattress
With thousands of reviews on Nectar’s website, the Nectar mattress has an average 4.8 out of 5 stars. One common customer complaint about the Nectar mattress is its longer-than-average break-in period, while many customers praise its excellent value and comfort once fully settled.
Want to see more? Visit our Nectar mattress review or our roundup of the best memory foam beds.
Helix Midnight – Best Hybrid King-Size Mattress
Helix Midnight Mattress
Part of Helix’s core line of mattresses, the Midnight has a hybrid construction that’s particularly suited to back and side sleepers.
Material
Hybrid
Trial Period
100 nights
Shipping Method
Free shipping
Firmness
Medium-firm: 6/10
Warranty
10-year warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
Helix Midnight Mattress
Part of Helix’s core line of mattresses, the Midnight has a hybrid construction that’s particularly suited to back and side sleepers.
Material
Hybrid
Warranty
10-year warranty
Firmness
Medium-firm: 6/10
Shipping Method
Free shipping
Trial Period
100 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
Helix Midnight Mattress
Part of Helix’s core line of mattresses, the Midnight has a hybrid construction that’s particularly suited to back and side sleepers.
Material
Hybrid
Firmness
Medium-firm: 6/10
Trial Period
100 nights
Warranty
10-year warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
The Helix Midnight at a Glance
The Helix Midnight was built with side sleepers in mind, but it’s a great bed for anyone who wants a medium-firm feel with some initial softness. It lays three sheets of proprietary foam on top of a coil unit for a classic hybrid design.
What’s Inside the Helix Midnight?
The Helix Midnight is 11.5 inches tall and has six layers, including its top cover.
- Layer 1 – Cover. Made of soft, breathable fabric. Can be swapped for a GlacioTex™ Cooling Cover for an additional fee.
- Layer 2 – Memory Plus Foam. Helix’s proprietary material that offers pressure relief and a soothing amount of give.
- Layers 3 & 4 – Helix Response Foam. One cradles, and one is more supportive.
- Layer 5 – Coil Unit. pocketed coils that are stronger on the long edges of the bed.
- Layer 6 – Duradense Foam. A sturdy base.
Our Thoughts After Testing the Helix Midnight
The Midnight’s combination of cozy foams and responsive coils is tough to beat, earning it 5 out of 5 points for both support and pressure relief from me and my fellow testers. It feels welcomingly soft up top, but the coils add reassuring firmness from beneath.
The Midnight also isolated motion much better than we expected it to. Usually, beds with springs transfer a lot of movement, but this one stayed very calm while we turned over, wiggled, and bounced. It should be great if you want to share a king-sized mattress with a restless partner.
Its edge support, however, leaves a lot to be desired. The reinforced springs in its coil units only line the long edges of the bed, and I still felt like I was sliding off a bit when I laid close to one of those sides. It received a paltry 2 out of 5 in this category.
Helix Midnight Mattress Dimensions
| Height | Number of Layers | Product Width | Product Length |
| 11.5″ | 6 | 76″ | 80″ |
Customer Reviews of the Helix Midnight Mattress
The Helix Midnight rates 4.5 stars out of 5 on Helix’s website. The main negative is that reviewers tend to find it too soft for their liking and feel as though they’re sinking. But overall, users say they’re getting a great night’s sleep and some pain relief.
Need more info? Check out our Helix Midnight mattress review or our picks for the best hybrid mattresses.
DreamCloud Premier – Best King-Size Mattress for Side Sleepers
DreamCloud Premier Mattress
The DreamCloud Premier is a great option for those who want a more luxurious sleeping experience.
Material
Hybrid
Trial Period
365 nights
Shipping Method
Free shipping
Firmness
Medium: 5.5/10
Warranty
Lifetime warranty
Price Range
$$$$$
DreamCloud Premier Mattress
The DreamCloud Premier is a great option for those who want a more luxurious sleeping experience.
Material
Hybrid
Warranty
Lifetime warranty
Firmness
Medium: 5.5/10
Shipping Method
Free shipping
Trial Period
365 nights
Price Range
$$$$$
DreamCloud Premier Mattress
The DreamCloud Premier is a great option for those who want a more luxurious sleeping experience.
Material
Hybrid
Firmness
Medium: 5.5/10
Trial Period
365 nights
Warranty
Lifetime warranty
Shipping Method
Free shipping
Price Range
$$$$$
The DreamCloud Premier at a Glance
The DreamCloud Premier is a hybrid bed that places special emphasis on its upper comfort layers. There are four foams between you and the coil unit, making this a mattress that’s well-suited for side sleeping as well as spinal alignment.
What’s Inside the DreamCloud Premier?
The DreamCloud Premier is 13 inches high with seven total layers, including its top cover.
- Layer 1 – Cover. Made with a soft cashmere-blend.
- Layer 2 – Contouring Quilted Foam. Cushioning gel foam in the Euro top.
- Layer 3 – Supportive Quilted Foam. Firmer foam in the Euro top.
- Layer 4 – Gel Memory Foam. For cooling pressure relief.
- Layer 5 – Transitional Foam. Foam with a slightly firmer feel to assist with spinal alignment.
- Layer 6 – Innerspring Unit. Where pocketed coils allow for cooling airflow and the springs are reinforced along the edges.
- Layer 7 – Base Layer. Stable foam forms the bottom layer of the bed.
Our Thoughts After Testing the DreamCloud Premier
The DreamCloud Premier is an extra-luxurious version of one of my favorite mattresses, the DreamCloud.
It has some additional padding up top that give it a memorably plush feel, though it doesn’t lose any of the stalwart support from its innerspring unit. We gave it a 4.5 for both support and pressure relief.
It has a balanced profile to suit side sleepers, who need both cushion and spinal alignment.
In my opinion, a king-sized version of this bed is bound to make you feel like pampered royalty regardless of your body type.
However, its motion isolation, cooling, and edge support are nothing to write home about. All three aspects received a 3.5 out of 5 from me and the testing team. These aren’t bad scores, but if you sleep very hot or very lightly, they’re worth noting.
DreamCloud Premier Mattress Dimensions
| Height | Number of Layers | Product Width | Product Length |
| 14″ | 6 | 76″ | 80″ |
Customer Reviews of the DreamCloud Premier
Coming in at 4.5 out of 5 stars on DreamCloud’s site, the DreamCloud Premier receives a majority of positive reviews. Customers praise the DreamCloud Premier mattress for its luxury feel, but some have noted that it may not be the best choice for those on a tighter budget.
Want to read more? Visit our full DreamCloud Premier review or our roundup of the best mattresses for side sleepers.
Brooklyn Bedding Signature Hybrid – Best King-Size Mattress for Combination Sleepers
Brooklyn Bedding Signature Hybrid Mattress
The Brooklyn Bedding Signature Hybrid is priced similarly to other bed-in-the-box options, it represents a fantastic value in the hybrid market.
Material
Hybrid
Trial Period
120 nights
Shipping Method
Free shipping
Firmness
Multiple firmness options
Warranty
10-year warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Sleeping
Ideal for average weight back sleepers.Financing Options
Financing options are available for this mattress.
Brooklyn Bedding Signature Hybrid Mattress
The Brooklyn Bedding Signature Hybrid is priced similarly to other bed-in-the-box options, it represents a fantastic value in the hybrid market.
Material
Hybrid
Warranty
10-year warranty
Firmness
Multiple firmness options
Shipping Method
Free shipping
Trial Period
120 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Sleeping
Ideal for average weight back sleepers.Financing Options
Financing options are available for this mattress.
Brooklyn Bedding Signature Hybrid Mattress
The Brooklyn Bedding Signature Hybrid is priced similarly to other bed-in-the-box options, it represents a fantastic value in the hybrid market.
Material
Hybrid
Firmness
Multiple firmness options
Trial Period
120 nights
Warranty
10-year warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Sleeping
Ideal for average weight back sleepers.Financing Options
Financing options are available for this mattress.
The Brooklyn Bedding Signature Hybrid at a Glance
This hybrid comes in three distinct firmness levels, but all three should be exceptionally bouncy due to the spring unit at the base. This is a balanced bed that does the essentials well but lacks flashy bells and whistles.
What’s Inside the Brooklyn Bedding Signature Hybrid?
The Brooklyn Bedding Signature Hybrid is 11.5 inches tall with five inner layers underneath its cover. You can order it in a Soft, Medium, or Firm feel—the firmness you choose will determine how thick each layer is.
- Layer 1 – Quilted Top. Allows for some cushion while also preventing long-term sagging.
- Layer 2 – Comfort Foam. Designed for both pressure relief and springy responsiveness.
- Layer 3 – VariFlex™ Foam. Adds support and transitions into the bed’s innerspring unit.
- Layer 4 – Innerspring Unit. Coils flex individually in fabric pockets, and reinforced springs along the sides help the edges stay strong.
- Layer 5 – Foam Base. High-density foam acts as a long-lasting foundation.
Our Thoughts After Testing the Brooklyn Bedding Signature Hybrid
We were getting airtime on this bed due to its powerful bounce. It received a perfect score in that category, as well as in the two most crucial ones: support and pressure relief.
Combination sleepers who shift between their sides, backs, and stomachs should appreciate how the responsive surface helps you to move instead of trapping you inside stifling layers.
That said, this bed does not do a good job of dampening motion. A king-size version will allow you to change positions seamlessly, but anyone sharing the bed might feel your movements.
Signature Hybrid Mattress Dimensions
| Height | Number of Layers | Product Width | Product Length |
| 11.5″ | 5 | 76″ | 80″ |
Customer Reviews of the Brooklyn Bedding Signature Hybrid
On Brooklyn Bedding’s website, the Signature Hybrid has 4.7 out of 5 stars. This mattress receives praise from customers for its versatility with different firmness options, but some have mentioned that it may produce slight noise when bearing weight.
Interested in this bed? Read our full Brooklyn Bedding Signature Hybrid mattress review, or browse our top picks for the best mattresses for combination sleepers.
The WinkBed – Best King-Size Mattress for Back Pain
WinkBed Mattress
WinkBed is a luxury hybrid bed with a variety of comfort features that should make it a versatile pick for most sleeping positions.
Material
Hybrid
Trial Period
120 nights
Shipping Method
Free shipping
Firmness
Multiple firmness options
Warranty
Lifetime warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Seniors
This bed is perfect for senior sleepers.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.
Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
WinkBed Mattress
WinkBed is a luxury hybrid bed with a variety of comfort features that should make it a versatile pick for most sleeping positions.
Material
Hybrid
Warranty
Lifetime warranty
Firmness
Multiple firmness options
Shipping Method
Free shipping
Trial Period
120 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Seniors
This bed is perfect for senior sleepers.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.
Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
WinkBed Mattress
WinkBed is a luxury hybrid bed with a variety of comfort features that should make it a versatile pick for most sleeping positions.
Material
Hybrid
Firmness
Multiple firmness options
Trial Period
120 nights
Warranty
Lifetime warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Seniors
This bed is perfect for senior sleepers.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.
Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
The WinkBed at a Glance
If you’re looking for a king-size bed that can help relieve back pain, I’d nominate the WinkBed. It’s a hybrid mattress with handcrafted touches and an especially durable innerspring unit beneath its softer foams. It has multiple firmness options, including one for heavier sleepers.
What’s Inside the WinkBed?
The WinkBed has four firmness options you can choose from: Softer, Luxury Firm, Firmer, and Plus, the last of which is designed for heavier sleepers. Regardless of the feel you pick, it’ll stand around 13.5 inches tall.
- Cover. A Tencel™ cover with breathable fabric derived from eucalyptus wood pulp.
- Euro Pillow Top. Plush foam for cushioning and pressure relief.
- Comfort and Support Layers. Additional foam layers—including a LumbarLayer™ that supports the lower back—eventually lead into the innerspring unit.
- Coils. Different zones of innersprings offer increased pressure relief or pushback depending on their location. The coils are also reinforced along the edges to maximize your usable sleep space.
Our Thoughts After Testing the Winkbed
The WinkBed has more back-friendly features than most other beds I’ve reviewed, including zoned coils and a specialized foam “LumbarLayer™”, both of which lend the low back some enhanced support.
I’m happy to report that you can definitely feel these elements working: I was lifted in all the right places while still feeling some nice cushioning from the Euro Top.
My fellow testers and I agreed that this is a well-rounded mattress, and it would be lovely to own in a stately king size.
It earned 4’s and 5’s across almost all performance categories, with the only exception being motion isolation. In that category, the WinkBed scored a 3 out of 5—it’s pretty average at dampening movement.
The WinkBed Mattress Dimensions
| Height | Number of Layers | Product Width | Product Length |
| 13.5″ | 4 | 76″ | 80″ |
Customer Reviews of the WinkBed
On the WinkBeds site, the WinkBed earns a 4.8 out of 5 stars. One drawback of the WinkBed mattress is that it might be too expensive for budget-conscious shoppers, but overall it offers excellent durability and customizable firmness options.
Looking for more info? See our full WinkBed mattress review or our roundup of the best mattresses for back pain.
Nolah Evolution – Best King-Size Mattress for Couples
Nolah Evolution Hybrid Mattress
Nolah’s innovative pressure-relieving abilities should be an excellent fit for side-sleepers, and if you struggle with overheating, the AirFoamICE™ technology should keep you cool all night long.
Material
Hybrid
Trial Period
120 nights
Shipping Method
Free shipping
Firmness
Multiple firmness options
Warranty
Lifetime warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Seniors
This bed is perfect for senior sleepers.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
Nolah Evolution Hybrid Mattress
Nolah’s innovative pressure-relieving abilities should be an excellent fit for side-sleepers, and if you struggle with overheating, the AirFoamICE™ technology should keep you cool all night long.
Material
Hybrid
Warranty
Lifetime warranty
Firmness
Multiple firmness options
Shipping Method
Free shipping
Trial Period
120 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Seniors
This bed is perfect for senior sleepers.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
Nolah Evolution Hybrid Mattress
Nolah’s innovative pressure-relieving abilities should be an excellent fit for side-sleepers, and if you struggle with overheating, the AirFoamICE™ technology should keep you cool all night long.
Material
Hybrid
Firmness
Multiple firmness options
Trial Period
120 nights
Warranty
Lifetime warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Seniors
This bed is perfect for senior sleepers.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Sleeping
Ideal for lightweight and average weight back sleepers.
Side Sleeping
Ideal for lightweight and average weight side sleepers.Financing Options
Financing options are available for this mattress.
The Nolah Evolution at a Glance
At 15 inches tall, a king-size Nolah Evolution cuts a striking figure in any bedroom. Its opulent construction includes seven total layers, plus an upper gusset that encourages heat to leave the mattress. With all of that material, it’s no surprise that it stands up well to the challenges of partnered sleeping.
What’s Inside the Nolah Evolution?
Listing the materials inside the Nolah Evolution is no easy feat, as this mattress has seven layers (including its top cover) and is 15 inches thick. You can order this mattress in one of three firmness levels: Plush, Luxury Firm, or Firm.
- Layer 1 – Cover. An organic cotton cover with heat-transferring fibers.
- Layer 2 – Pillow Top. A Euro topper quilted with breathable foam and encased by a gusset that further vents unwanted warmth.
- Layer 3 – AirFoamICE™. This graphite-infused foam reputedly beats memory foam at pressure relief, cooling, and standing up to wear and tear.
- Layer 4 – High-Resilience Foam. A firmer foam that supports the softer layer above.
- Layer 5 – Transition Foam. Adds some bounce and responsiveness to the mix.
- Layer 6 – Coil Unit. Three regions that provide specialized amounts of pushback to different parts of the body. Thicker coils around the bed’s perimeter lend the mattress remarkable edge support.
- Layer 7 – Base Layer. A robust foundation made from recycled plant fiber.
Our Thoughts After Testing the Nolah Evolution
This mattress was a universal hit. It earned perfect scores from us in all but two categories—pressure relief (4 out of 5) and motion isolation (4 out of 5). But a 4 is still a high score, and the Evolution appears to be a jack of all trades when it comes to comfort.
Couples in need of a king-size bed should be pleased with the Evolution’s awesome edge support, responsiveness, and cooling. As for its motion isolation, it may not be perfect, but it’s pretty darn close.
One of our senior staff writers owns this bed, and because of it, she says she can finally achieve easy sleep next to her husband, who tends to fidget and flop “like a tilt-a-whirl at a county carnival.”
Nolah Evolution Mattress Dimensions
| Height | Number of Layers | Product Width | Product Length |
| 15″ | 7 | 76″ | 80″ |
Customer Reviews of the Nolah Evolution
The Nolah Evolution has netted an average of 4.9 out of 5 stars on Nolah’s website across hundreds of customer reviews. Buyers seem to value the brand’s dedicated customer service and the pressure-relieving feel of the bed, though some say it doesn’t run quite as cool as they’d hoped.
Interested in exploring further? Read our full Nolah Evolution mattress overview or our roundup of the best beds for couples.
Helix Dawn – Best Firm King-Size Mattress
Helix Dawn Mattress
This hybrid mattress was specifically designed for those who love a firm but contouring mattress.
Material
Hybrid
Trial Period
100 nights
Shipping Method
Free shipping
Firmness
Firm: 7.5/10
Warranty
10-year warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for average weight back sleepers.
Stomach Sleeping
Ideal for lightweight and average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Helix Dawn Mattress
This hybrid mattress was specifically designed for those who love a firm but contouring mattress.
Material
Hybrid
Warranty
10-year warranty
Firmness
Firm: 7.5/10
Shipping Method
Free shipping
Trial Period
100 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for average weight back sleepers.
Stomach Sleeping
Ideal for lightweight and average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Helix Dawn Mattress
This hybrid mattress was specifically designed for those who love a firm but contouring mattress.
Material
Hybrid
Firmness
Firm: 7.5/10
Trial Period
100 nights
Warranty
10-year warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Couples
This bed has great motion isolation so you will not feel your partner tossing and turning at night.
Back Sleeping
Ideal for average weight back sleepers.
Stomach Sleeping
Ideal for lightweight and average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
The Helix Dawn at a Glance
The spring unit and the proprietary foams in the Helix Dawn give it a firmer feel that’s perfect for people who prefer minimal sinkage. Instead of classic memory foam, this king-size hybrid features Helix Dynamic Foam—a material that emulates the airy feel of latex—as its first foam layer.
What’s Inside the Helix Dawn?
The Helix Dawn is 11.5 inches tall and has five total layers.
- Layer 1 – Cover. It comes with a soft cover, but for an extra fee you can exchange it for a GlacioTex™ Cooling Cover with fibers that help redirect excess heat.
- Layer 2 – Helix Dynamic Foam. Emulates the responsive feel of latex.
- Layer 3 – Helix Responsive Foam. Cradles pressure points.
- Layer 4 – Transitional Foam. Another layer of Helix responsive foam for a firmer feel.
- Layer 5 – Innerspring Unit. Individually wrapped springs that have been reinforced along the long edges.
- Layer 6 – DuraDense Foam. A sturdy foundational layer.
Our Thoughts After Testing the Helix Dawn
Back and stomach sleepers should appreciate the even, stable support that the Helix Dawn offers.
We felt that we were resting securely “on top of” rather than “inside” the mattress, though it’s worth noting that this bed has a lower pressure relief score than average (3.5 out of 5). That means it’s probably too hard for side sleepers and some lightweight folks.
In addition to a firm feel, this bed is also very bouncy. Its responsiveness is a benefit for combination sleepers who move around a lot, as well as for sexually active couples.
Helix Dawn Mattress Dimensions
| Height | Number of Layers | Product Width | Product Length |
| 11.5″ | 5 | 60″ | 80″ |
Customer Reviews of the Helix Dawn Mattress
The Helix Dawn has an average of 4.4 out of 5 stars on the Helix website. Negative reviews say that the mattress seems to get softer over time, but the majority positive reviews claim the bed is comfortable and has helped with aches and pains.
Want a closer look? Consult our in-depth Helix Dawn review or our roundup of the best firm mattresses.
Bear Star Hybrid – Best Cooling King-Size Mattress
Bear Star Hybrid Mattress
The Bear Hybrid is an appealing product because it should cater to a wide variety of sleepers.
Material
Hybrid
Trial Period
120 nights
Shipping Method
Free shipping
Firmness
Medium-firm: 6/10
Warranty
Lifetime warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Joint Pain
This bed is perfect for anyone suffering from joint pain.
Back Sleeping
Ideal for lightweight back sleepers.
Side Sleeping
Ideal for average weight side sleepers.Financing Options
Financing options are available for this mattress.
Bear Star Hybrid Mattress
The Bear Hybrid is an appealing product because it should cater to a wide variety of sleepers.
Material
Hybrid
Warranty
Lifetime warranty
Firmness
Medium-firm: 6/10
Shipping Method
Free shipping
Trial Period
120 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Joint Pain
This bed is perfect for anyone suffering from joint pain.
Back Sleeping
Ideal for lightweight back sleepers.
Side Sleeping
Ideal for average weight side sleepers.Financing Options
Financing options are available for this mattress.
Bear Star Hybrid Mattress
The Bear Hybrid is an appealing product because it should cater to a wide variety of sleepers.
Material
Hybrid
Firmness
Medium-firm: 6/10
Trial Period
120 nights
Warranty
Lifetime warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Hot Sleepers
If you often overheat while you sleep, this mattress should help you stay cool.
Joint Pain
This bed is perfect for anyone suffering from joint pain.
Back Sleeping
Ideal for lightweight back sleepers.
Side Sleeping
Ideal for average weight side sleepers.Financing Options
Financing options are available for this mattress.
The Bear Star Hybrid at a Glance
The Bear Star Hybrid is often marketed to athletes, but its cooling components don’t discriminate—they should help anyone who tends to sleep hot. At the top of this bed is a cover that boasts temperature-regulating HydroCool® technology, and for an extra fee, you can add Celliant® fibers that allegedly transform body heat into infrared energy.
Titan Plus – Best King-Size Mattress for Heavy People
Titan Plus
This specially-designed hybrid is made for heavier sleepers to help them get better, more comfortable sleep.
Material
Hybrid
Trial Period
120 nights
Shipping Method
Free shipping
Firmness
Firm: 8/10
Warranty
10-year warranty
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Seniors
This bed is perfect for senior sleepers.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for heavyweight back sleepers.
Stomach Sleeping
Ideal for heavyweight stomach sleepers.Financing Options
Financing options are available for this mattress.
Titan Plus
This specially-designed hybrid is made for heavier sleepers to help them get better, more comfortable sleep.
Material
Hybrid
Warranty
10-year warranty
Firmness
Firm: 8/10
Shipping Method
Free shipping
Trial Period
120 nights
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Seniors
This bed is perfect for senior sleepers.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for heavyweight back sleepers.
Stomach Sleeping
Ideal for heavyweight stomach sleepers.Financing Options
Financing options are available for this mattress.
Titan Plus
This specially-designed hybrid is made for heavier sleepers to help them get better, more comfortable sleep.
Material
Hybrid
Firmness
Firm: 8/10
Trial Period
120 nights
Warranty
10-year warranty
Shipping Method
Free shipping
Price Range
$$$$$
We recommend this mattress for the following sleeper types:
Seniors
This bed is perfect for senior sleepers.
Hip Pain
This bed is perfect for anyone suffering from hip pain.
Back Pain
This bed is perfect for anyone suffering from back pain.
Back Sleeping
Ideal for heavyweight back sleepers.
Stomach Sleeping
Ideal for heavyweight stomach sleepers.Financing Options
Financing options are available for this mattress.
The Titan Plus at a Glance
If you’re a bigger person looking for a king-size mattress, the Titan Plus has you covered! This bed was designed to accommodate plus-size folks who often find themselves dissatisfied with other mattresses. Support is where the Titan Plus prevails, thanks to its industrial coil unit that should have you feeling lifted and aligned on the mattress surface.
What’s Inside the Titan Plus?
The Titan Plus is 11 inches tall. It has 4 internal layers and can accommodate up to 1,000 pounds.
- Layer 1 – Gel Memory Foam (1 inch). This cooling foam layer contours to the body but reforms easily to its original shape.
- Layer 2 – TitanFlex™ Foam (2 inches). A responsive layer of foam that also prevents pressure buildup.
- Layer 3 – Coils (6 inches). Sturdy, individually wrapped coils make up the support unit. There are stronger coils along the edges for added reinforcement.
- Layer 4 – High-Density Foam Base (2 inches). The dense, firm, foam foundation of the bed.
Our Thoughts After Testing the Titan Plus
Our heavyweight tester, Spencer, was a huge fan of this bed.
He felt loads of support accompanied by absolutely no pressure buildup, and even threatened to take the bed home because of how comfortable it felt.
As an average-weight sleeper, I thought the bed felt just a tad firm, and Loren—our most petite tester—agreed, though we couldn’t quibble with how lifted and and supported we felt.
The Titan Plus is another one of those rare hybrids that excels at motion isolation. It surprised us with how well it canceled out movements, and gave it a 4 out of 5 in this category.
A king-sized version of this mattress would work well for plus-sized folks who want to stay cool and spread out (its edge support is nothing to scoff at, either!).
Titan Plus Dimensions
| Height | Number of Layers | Product Width | Product Length |
| 11″ | 4 | 76″ | 80″ |
Customer Reviews of the Titan Plus
Users on Titan by Brooklyn Bedding’s site have given the Titan Plus a 4.7 out of 5 stars. There are over 2,500 reviews where most customers find the Titan Plus mattress to offer exceptional durability and support, but some mention that it might be too firm for those who prefer a softer feel.
Want to learn more? Check out our full Titan Plus review or our roundup of the best mattresses for heavy people.
Other King-Size Beds We Tested
While these mattresses didn’t make our list, they’re still large and cozy king-sized beds.
Product
Type
Score
Who Should Buy a King Mattress?
- Couples and families. The best part about a king-size mattress is the amount of space you’re getting. Couples who want lots of room to stretch out should enjoy this size, and if you have children, there will probably be room to spare for when they want to rest (or jump) alongside you.
- Pet owners. In the same vein, folks who allow their pets into the bed may want the extra space to ensure that everyone’s comfortable.
- People with large bedrooms. One drawback of a king-size bed is that it can take up a lot of space. If you have a fairly big bedroom, though, a king might be the perfect fit. Sometimes, a queen or full can look too small in larger rooms.
- People who toss and turn. If you find yourself waking up on the opposite side of the bed from where you went to sleep, a king-size mattress may give you the room you need to sprawl and change positions.
- People who want a touch of luxury. Simply put, king-size mattresses look and feel luxurious. If you’re someone who wants their bedroom to be the ultimate restful retreat, a king may be for you.
What to Consider When Shopping for a King-Size Mattress
Mattress Size
Did you know there’s more than one type of king-size bed? Actually, there’s more than five, and they all have different dimensions.
How Big is a King-Size Bed?
A standard king-size mattress is 76 inches wide and 80 inches long. This is the most common incarnation of a king-size bed. Its dimensions make it a full 16 inches wider than queen beds, giving you more than a foot of added space from side to side.
King vs. California King
A California king mattress is slightly narrower and longer than a standard king, measuring 72 inches wide and 84 inches long. It’s also known as a Western king, Cali king, or Cal king.
So, why you might buy a California king over a standard king? Certain sleepers — especially tall ones — appreciate the extra length. Its dimensions may also work better with your bedroom setup.
The king vs. California king debate is long and storied, with good arguments on either side.
King vs. Alaskan King
An Alaskan king-size bed is 108 inches by 108 inches — in other words, a 9 foot by 9 foot square! That makes it about 2.6 feet wider and 2.3 feet longer than a regular king. It’s the largest king-size bed available that isn’t custom-made.
These mattresses are much harder to find than regular king-size beds, and much more expensive. But some folks are willing to pay a large sum for all that extra space and luxury.
King vs. Wyoming King
The Wyoming king is a square mattress that measures 84 inches by 84 inches, a whopping 7 feet by 7 feet. It’s 8 inches wider and 4 inches longer than a standard king bed.
King vs. Texas King
A Texas king mattress measures 80 inches wide by 90 inches long (or 6.5 feet by 8 feet). It’s 4 inches wider and 10 inches longer than a regular king.
King vs. Split King
A split king mattress is exactly what it sounds like: a king-size bed that’s been split down the middle into two separate sides. Usually, a split king is just two twin XL mattresses (measuring 38 inches wide by 80 inches long each) placed next to one other.
Split kings are ideal for couples who want to sleep beside one another but have notably different preferences in terms of comfort. For example, maybe you like a soft mattress, but your partner prefers an extremely firm bed. With a split king, you won’t need to compromise.
This setup works optimally with a split adjustable base. Each sleeper gets the feel they want from their bed, and they can manipulate the head and foot on their side independently.
The Different Types of King-Size Beds, Compared
| Type of Mattress | Dimensions (inches) |
| Standard King | 76″ x 80″ |
| California King | 72″ x 84″ |
| Wyoming King | 84″ x 84″ |
| Texas King | 80″ x 98″ |
| Alaskan King | 108″ x 108″ |
| Split King | 30″ x 80″ and 30″ x 80″ |
Type of Mattress
The type of king-size mattress you buy will affect how it feels, how much it costs, and how long it lasts.
Hybrid King Mattresses
Hybrid mattresses have a coil unit at the bottom for support and foam layers at the top for comfort and pressure relief. Because they combine the benefits of all-foam and innerspring beds, we recommend them more often than not.
Memory Foam King Mattresses
Memory foam mattresses excel at pressure relief and motion isolation in particular. They’re also a more affordable option than a hybrid bed. However, they may trap heat, and they typically can’t offer as much support as a mattress with springs.
Latex King Mattresses
Latex mattresses feature latex foam somewhere in their construction, whether it’s as a single comfort layer or the entirety of the bed. Latex foam is temperature-neutral, durable, and great for pressure relief. Natural and organic latex is also eco-friendly. The main downside to this material is its high price point.
Innerspring King Mattresses
Traditional innerspring mattresses have an interconnected coil system at the base, topped by a thin comfort layer. These beds aren’t very common nowadays due to the popularity and enhanced features of hybrid models.
Support
Consistent, even support is essential in a king-size bed. Otherwise, you may end up with a mattress that dips in the middle, causing you and your partner to roll into that indentation at night.
How do we test support?
We lie down on each bed we test and assess how lifted we feel, and whether that support is present throughout the entire mattress. We take special notice of beds with zoned support—these mattresses, such as the WinkBed and Saatva Classic, provide extra lift under areas that need it most, namely the lower back.
A bed receives a high score in support if we feel evenly and thoroughly buyoed across body types and sleeping positions. It will get a low score if we feel that we’re sinking down too much or too unevenly in some areas.
Firmness
The firmness of your king-size mattress affects how comfortable you are and how soundly you sleep. Something overly soft can leave you feeling stuck in the bed, while something too firm can cause soreness around sensitive joints.
Furthermore, the best firmness for a given person can depend on their body type and primary sleeping position.
Firmness and Body Type
Your weight and body type influence how firm a bed feels to you.
- Petite people (those who weigh less than 130 pounds) tend to prefer softer beds, and are more sensitive to harder surfaces.
- Average-weight people (between 130 and 230 pounds) usually like a medium-firm bed that splits the difference between cushion and support.
- Heavyweight sleepers (who weigh more than 230 pounds) do best on firmer beds, which tend to provide lots of support.
Firmness and Sleeping Position
There are three main sleeping positions: side, back, and stomach. Some folks rotate through more than one throughout the night, and they’re called combination sleepers.
- Side sleepers typically like a softer bed that relieves pressure from the hips and shoulders.
- Back sleepers, on the other hand, usually enjoy something that can distribute their weight evenly over the surface of the bed. A medium to medium-firm feel works best for these folks.
- Stomach sleepers need a firmer bed. A firm mattress helps to keep their hips elevated and level with their shoulders, whereas an overly soft bed could cause their hips to dip too low.
- Combination sleepers need a bed that suits several sleeping positions, so a versatile medium-frm feel is ideal, along with enough responsiveness to help them move around.
How do we test firmness?
When we test a bed, we assign it a rating on our mattress firmness scale between 1 and 10. The higher the number, the firmer the mattress (1 would be softer than air, 10 would be as hard as cement).
Because we’re people with different body types, we consult with each other and agree on a firmness score that matches everyone’s experience of the bed.
Pressure Relief
Beds that cradle your most sensitive spots can melt away aches and pains to bring restorative sleep. We say that these mattresses are good at pressure relief—they counteract pressure buildup around the places on your body that are bearing the most weight or force.
Pressure relief is important for any mattress, including king-sized ones. Some people like a lot of it, whereas others prefer a bed with less. But a degree of pressure relief is what helps prevent the soreness and stiffness you’d probably wake up with if you slept on a totally rigid surface.
How do we test pressure relief?
We use a pressure map on each bed we try. This map is color-coded to show areas of increased pressure buildup: blue and green mean less pressure, while red and yellow signify more pressure. We have testers of each body type lie on their back and side to get an accurate reading for each position.
Edge Support
Even in a large bed like a king, good edge support is beneficial, particularly to co-sleepers who spread out a lot. It allows couples to use the entire bed without feeling like they’re falling out of it.
Additionally, reinforced edges can help those with mobility issues get in and out of bed more easily. Edges without enhanced support may dip too low and cause slipping.
How do we test edge support?
We test out edge support in two positions: sitting on the edge while tying our shoes, then lying on the edge for about a minute. We make note of how much the edges sink as well as how secure we feel.
Motion Isolation
A king-size bed should give you plenty of room to move around, but if it doesn’t isolate motion well, you may feel every movement from a partner (or child, or pet). A bed with good motion isolation will dampen these movements so that you sleep on, undisturbed.
How do we test motion isolation?
We use a seismograph app to record movement across the mattress surface. The graphs look like a line with a lot of waves; smaller waves or straight lines mean little to no disturbance, while bigger waves mean more noticeable movement.
We’ll also lie side by side and see if we can feel a fellow tester’s movements to corroborate our findings.
Responsiveness
Responsiveness refers to how quickly and energetically a bed’s surface “bounces back” in response to your movements. It’s a helpful feature for combination sleepers, who change positions throughout the night and don’t want to feel stuck in a bed’s layers.
Because a responsive bed facilitates movement and bounce, it’s also the best type of bed for sex.
How do we test for responsiveness?
We bounce a lacrosse ball and a weighted medicine ball on the bed to see how high the objects bounce and how quickly the mattress surface reshapes itself. Of course, we also jump on the bed too!
Cooling
The size of a mattress doesn’t necessarily affect its ability to keep you cool, but if you’re sharing a bed, overheating becomes more likely. Many of the best king-size beds therefore have lots of cooling elements.
Look for foams infused with cooling gels or copper, as well as spring systems that permit extra airflow. Beds like the Bear Star Hybrid and the Nolah Evolution take things a step further with their wealth of temperature-regulating materials.
How do we test cooling?
We use a temperature gun to measure a bed’s cooling capability. First, we’ll take the surface temperature of the mattress (which is usually 74 degrees Fahrenheit at most in our studio).
Then, a tester lies on the bed for five minutes, and we take the temperature again. After another five minutes, we take the temperature a third time to see how much it’s changed (if at all). A bed that keeps its surface temperature within five degrees between these two readings has effective cooling materials.
Best King-Size Beds Price Comparison Chart
| Mattress | Best For | Price (King Size) | Review |
| Saatva Classic | Editor’s Pick | $2,595 | Saatva Classic Mattress Review |
| Nectar | Memory Foam | $1,399 | Nectar Mattress Review |
| Helix Midnight | Hybrid | $1,748.80 | Helix Midnight Mattress Review |
| DreamCloud Premier | Side Sleepers | $2,553 | DreamCloud Premier Mattress Review |
| Brooklyn Bedding Signature Hybrid | Combination Sleepers | $1,599 | Brooklyn Bedding Signature Hybrid Mattress Review |
| The WinkBed | Back Pain | $1,999 | Winkbed Mattress Review |
| Nolah Evolution | Couples | $2,699 | Nolah Evolution Mattress Review |
| Helix Dawn | Firm | $1,748.80 | Helix Dawn Mattress Review |
| Bear Star Hybrid | Cooling | $2,298 | Bear Star Hybrid Mattress Review |
| Titan Plus | Heavy People | $1,499 | Titan Plus Mattress Review |
King-Size Mattress FAQs
What are the dimensions of a king-size mattress?
A standard king-size mattress is 76 inches in width by 80 inches in length.
What’s the difference between a king and a California king?
A standard king-size mattress is 4 inches wider but also 4 inches shorter than a Californa king. Whereas a king bed is 76” x 80”, a California king is 72” x 84”.
How much does a king-size bed cost?
You can expect to pay at least around $1,500 to $2,000 for a quality king-size bed. However, certain luxury models can cost more than $5,000.
Is a king-size mattress better than a queen-size mattress?
A king-size mattress will be better for you if your bedroom is large enough and you need a lot of room to stretch out at night, especially if you share the bed with a partner, children, or pets.
A queen-size mattress is better if you’re trying to fit it in a smaller room, and you don’t mind snuggling up with any co-sleepers a bit more. It will also be somewhat more affordable than the larger model.
Both sizes have their pros and cons, but the decision ultimately comes down to the size of your bedroom, your budget, and your personal preferences.
Julia Forbes
Lead Product Tester
About Author
Julia is the Lead Reviewer at Sleep Advisor, specializing in testing out mattresses and sleep accessories – she’s in the right line of work, because she loves to sleep.
Stomach Sleeper