Our Casper vs. Lull Mattress Comparison for 2023

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The Casper and the Lull are both all-foam beds. In other words, both of these mattresses mix in a dash of memory foam materials and a dedication to support.

Casper is an innovative bed-in-a-box company that buzzed onto the scene almost a decade ago. Lull, on the other hand, was created out of frustration for the mattress industry. Lull claims that their compressed and boxed mattresses are on equal footing with more expensive in-store brands.

In this Casper vs Lull comparison, we provide in-depth reviews of each brand and show the characteristics that they share as well as how they differ so that you can better understand which mattress may be right for you.

Quick Comparison: Casper vs. Lull

Casper Original Product Image
Check pricing and availability by clicking the button below
  • Breathable AirScape™ foam
  • 100-night trial
  • 10-year limited warranty
  • Casper Review
LULL product image
Check pricing and availability by clicking the button below
  • Memory foam
  • 365-night trial
  • Limited lifetime warranty
  • Lull Review

Who I’d Recommend the Casper For

  • Versatility seekers – The Casper is specifically designed to work with close to all body shapes and sleep positions.

  • Folks looking for spinal alignment – The Casper uses firmer foam in the middle of the bed which will keep your hips elevated. This can provide relief, especially to stomach sleepers. The firmer foam in the center of the bed helps hold your hips in line, which can be a struggle, especially for stomach sleepers.

  • Those who got hot during the night – Casper’s perforated, trademarked AirScape foam allows for maximum airflow which will help keep the mattress cool.

Who I’d Recommend the Lull For

  • Hot Sleepers – Lull’s top layer of memory foam is infused with a cooling gel which will help draw heat from the body.

  • Memory foam enthusiasts – Contouring memory foam mattresses provide excellent pressure relief by conforming to the body’s natural curves.

  • Couples – This bed’s medium firmness and excellent ability to isolate motion should make it a hit with co-sleepers.

Comparing Casper vs Lull: Top Similarities

  • Cooling capabilities – The Casper and the Lull are both great for hot sleepers. This is not something that foam mattresses are typically known for, but thanks to Casper perforated AirScape™ foam, and the Lull infusing their foam with cooling gel, these mattresses.
  • Gentle cradling – When settling into both the Lull and the Caspers, sleepers are likely to feel that their bodies are being held in a gentle cradle.
  • All-foam firmness – Both mattresses have an all-foam construction and offer up a medium firmness. This is a versatile firmness that many sleepers will appreciate.

Comparing Casper vs Lull: Key Differences

  • Responsiveness – Casper has more responsiveness than the Lull. This is due in large part to the thicker and denser base and transition layers.
  • Support – Although both mattresses provide adequate support to sleepers, the Casper mattress gets the nod in this department. The Casper offers exceptional support to a wide variety of weights and preferred sleep positions.
  • Traditional foam feel – The Lull provides more of a traditional memory foam feel mainly because you come into contact with a slower-responsiveness and receive more of a sinking feeling.

Comparing Firmness, Support & Feel


A mattress’s firmness is simply how hard or how soft the bed feels when you lie on top of it. Of course, this is a subjective matter and several factors have to be taken into account. However, a general consensus can usually be formed. The Casper and the Lull are both rated at a 6 out of 10 on our firmness scale and this translates to a medium firmness. Mattresses within the medium scoring range are usually good for most sleeping positions and body types.

Mattress Firmness Level 6


Casper is a brand that aims for a universal feel, and their newly updated third layer that bolsters the center of the construction and expands the brand’s versatility even more. This bed pays special attention to the needs of sleepers with different sleep positions. However, the Lull still offers a good bit of support; it is just overall and not necessarily in the targeted areas of the Casper.


The Lull features a breathable top cover that is made from polyester and rayon, which should feel cool to the touch, you’ll feel slower with Lull than you will with Casper. The Casper provides a bit more surface contouring while the thicker base provides good spinal alignment for back, side, and stomach sleepers. The overall experience of the mattress is slightly quicker to respond due to the thicker and denser base and transition layers, and it is also a bed that offers good versatility.

Comparing Sinkage and Bounce

We would characterize the sinkage in both of these mattresses as a gentle cradle, meaning your body will rest more on top of it than deep inside it, as can be the case with some competing memory products. Surface-level sleeping helps with temperature regulation because it brings your body into contact with circulating airflow.

Both brands deliver some bounce but from different sources. Casper’s bounce is mostly located on its surface while Lull’s bounce is more mid-level. This feature in both can work with the quicker-responding layers in each to aid repositioning.

Comparing Motion Transfer

Foam mattresses tend to do a good job of absorbing and isolating motion. This generally means that couples and other co-sleepers who spend their nights with a restless partner or pet, will not be disturbed by the twists and turns of those who share their bed. Motion isolation is exceptional in both the Casper and Lull because of the combination of memory products and dense bases that do not conduct vibration and tend to muffle it at its source. People who are easily disturbed by their partner or pets getting in and out of the bed will enjoy both mattress’ limited motion transfer.

Comparing Cooling

These may be all-foam beds, but both the Casper and the Lull have included cooling properties in their beds. Both mattresses do a good job keeping you cool, but they use different ways to achieve it. Casper has implemented their proprietary AirScape™ foam at the top to help you stay cool. This foam is perforated to boost airflow. When air can move quickly through the foam, there is less chance that body heat will become trapped. The top memory foam layer of the Lull features gel, which should help keep the bed cool while you sleep.

Want to explore more cooling mattresses? Find our best mattresses for hot sleepers.

Comparing Construction (Materials & Quality)

Casper Construction

The Casper mattress is a bed-in-a-box foam mattress that stands a total of 11 inches tall. The bed’s layers are wrapped in a durable polyester fabric. All the foams in the Casper Original are also CertiPUR-US® certified to ensure you’re getting a quality and safe product.

original Casper bed layers image graphics
  • Beneath the cover is the first foam layer. This unit is a perforated proprietary comfort foam called AirScape™ that gives the mattress some bounce and breathability to keep the surface from overheating.
  • The middle foam layer is 2 inches of Zoned Support™, a memory foam that is firmer in the center of the bed where your hips are positioned, helping with the extra weight that tends to concentrate in this region. Additionally, this layer is softer around your shoulders and knees for extra pressure relief.
  • The base layer is a unit of dense foam that lends durability, provides support, and creates the overall foundation of the Casper mattress.

Lull Construction

This handcrafted cover is designed to offer a soft yet durable and flexible surface space. The cover is white on top and gray along the bottom half for a subtle, sophisticated look.

In total, the Lull bed stands at 10 inches tall.

Lull Mattress Construction
  • Below the cover, you will find the 1.5-inch Cooling Comfort layer. The memory foam here is infused with gel for additional cooling, so you sleep comfortably and don’t get too hot during the night.
  • The middle layer of the Lull is 1.5 inches of Therapeutic Support foam. This highly resilient foam layer is designed to cultivate good spine alignment and evenly distribute motion so that you don’t sink too deeply into the bed. This foam also serves as the transitional layer between the memory foam and the support foam.
  • The base of this mattress is a durable foam unit that is 7 inches thick. The bottom layer provides durability and sturdy support.

Comparing Company Policies & Price

  • Warranty – The Casper comes with an industry-standard 10-year limited warranty. The Lull has the clear advantage here as they offer a lifetime limited warranty.
  • Shipping – Lull offers free shipping within the contiguous United States, and offers a shipping subsidy for Alaska and Hawaii to make it more affordable. Casper offers free shipping to all 50 states and Canada, as well.
  • Trial Period – You can try out the Casper for 100 nights. If it’s not your dream match you can get a full refund. On the other hand you will have considerably longer to make your financial decision with the Lull, as they offer a 365 night trial.
  • Returns – Casper asks that you sleep on the mattress for at least 30 nights before you return it. However, after this time you can return your mattress for free as long as it is within the 100-night trial. If after sleeping on your Lull for up to a year, you find that you’re not satisfied, you can return your mattress for a full refund.
  • Price – Although there are some price differences depending on the mattress size, overall the Lull and the Casper are fairly comparable. There is between $100-200 difference.
SizeCasper Price (w/o discount)Lull Price (w/o discount)
Twin XL$995$899
Cali King$1,695$1,499
Split KingN/AN/A
Split Cali KingN/AN/A

Casper vs. Lull Compared Side-by-Side

CoverPolyesterRayon and polyester
MaterialsBreathable Foam, Zoned Support™, memory & poly foamsMemory Foam, gels & poly foams
CoolingAirflow through the foam, placement of memory materials, shallow cushioning depthInfusions of gel in foam, airflow through the fabric, reduced amount of memory foam
Motion TransferMinimalMinimal
Edge SupportGoodGreat
SinkageGentle CradleGentle Cradle
Warranty10-year limitedLifetime
Trial Period100 nights365 nights
Adjustable Base CompatibleYesYes (only in 11.5”)
ShippingShips to U.S., White Glove Delivery is optionalShips to the United States with free White Glove Delivery within contiguous U.S.
Made in the USADesigned and assembled in the USAYes
Read Full ReviewCasper Mattress ReviewLull Mattress Review
Shop NowCasper MattressLull Mattress

Final Thoughts

When it comes to the all-foam Lull duking it out with another all-foam all-star, the Casper, there are many similarities. However, there are enough differences that you can likely pinpoint one over the other if you have certain specifications. Do you want the enhanced and newly updated support system of Casper or would you rather experience the surface level sink in the slightly more affordable Lull?

It is a tough call, but fortunately you probably won’t be making a bad decision with either of these mattresses. If you still need some additional details, you can find them in our in-depth reviews of both brands that are available on our website.

Quick Comparison: Casper vs. Lull

Casper Original Product Image
Check pricing and availability by clicking the button below
  • Breathable AirScape™ foam
  • 100-night trial
  • 10-year limited warranty
  • Casper Review
LULL product image
Check pricing and availability by clicking the button below
  • Memory foam
  • 365-night trial
  • Limited lifetime warranty
  • Lull Review

Jill Zwarensteyn is the editor for Sleep Advisor and a certified sleep science coach. She is enthusiastic about providing helpful and engaging information on all things sleep and wellness.

Based in Los Angeles, she is an experienced writer and journalist who enjoys spending her free time at the beach, hiking, reading, or exploring new places around town.

She’s also an avid traveler who has a personal goal of being able to successfully sleep on an airplane someday.

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