Amerisleep compares well against a range of different products on the market, but can it stand the pressure of an established authority? With years of experience, Casper is capable of capturing the tremendous variety in terms of customer demand and accommodates quickly by employing contemporary technology.
Is Amerisleep up to the challenge? Will the mattress provide a comparable level of performance, and is it capable of standing up to the other? For this review, we will focus on Amerisleep’s AS3 model and see how it compares to Casper. Let's look at the Amerisleep vs. Casper “battle” and find out!
Product
Firmness
Trial Period
Comparing Materials/Construction/Layers
Amerisleep Organica

The combination of latex and coils makes this bed breathable, bouncy, and best of all, environmentally friendly.
Read Full ReviewMaterial
Latex
Trial Period
100 nights
Shipping Method
Free shipping minus HI and AK
Firmness
Medium-firm: 7/10
Warranty
20-year 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.Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.Side Sleeping
Ideal for heavyweight side sleepers.Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Amerisleep Organica

The combination of latex and coils makes this bed breathable, bouncy, and best of all, environmentally friendly.
Read Full ReviewMaterial
Latex
Warranty
20-year warranty
Firmness
Medium-firm: 7/10
Shipping Method
Free shipping minus HI and AK
Trial Period
100 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.Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.Side Sleeping
Ideal for heavyweight side sleepers.Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.

Amerisleep Organica
The combination of latex and coils makes this bed breathable, bouncy, and best of all, environmentally friendly.
Read Full ReviewMaterial
Latex
Firmness
Medium-firm: 7/10
Trial Period
100 nights
Warranty
20-year warranty
Shipping Method
Free shipping minus HI and AK
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.Back Sleeping
Ideal for lightweight, average weight, and heavyweight back sleepers.Side Sleeping
Ideal for heavyweight side sleepers.Stomach Sleeping
Ideal for average weight stomach sleepers.Financing Options
Financing options are available for this mattress.
Amerisleep
Amerisleep mattresses are crafted for high-end performance, and they take advantage of quality materials. There are even claims that the materials have been tested clinically to enhance your sleeping sensation. When it comes to constructing their mattresses, they take advantage of a few different types of layering. The most common technique is crafting a 12-inch thick mattress spread into three separate layers. The first layer is made out of 3 inches of Bio-Pur® foam. The second layer is 2 inches thick and is made of Affinity foam with HIVE® technology to deliver zoned support. The core of the bed is 7 inches thick, and it's made out of BioCore® foam. The breathable Refresh Cooling Cover is designed to promote cooling by drawing the heat away from your body and remaining cool for at least eight hours.

Casper Original Mattress

With premium foam and multi-zoned support, Casper Original keeps your body in alignment, offering a good balance of support and gentle cradling. Although it’s an all-foam mattress, this one is breathable thanks to thousands of perforations that allow continuous airflow.
Material
Foam
Trial Period
100 nights
Shipping Method
Free shipping
Firmness
Soft: 6/10
Warranty
10-year limited 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.Financing Options
Financing options are available for this mattress.
Casper Original Mattress

With premium foam and multi-zoned support, Casper Original keeps your body in alignment, offering a good balance of support and gentle cradling. Although it’s an all-foam mattress, this one is breathable thanks to thousands of perforations that allow continuous airflow.
Material
Foam
Warranty
10-year limited warranty
Firmness
Soft: 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 Pain
This bed is perfect for anyone suffering from back pain.Financing Options
Financing options are available for this mattress.

Casper Original Mattress
With premium foam and multi-zoned support, Casper Original keeps your body in alignment, offering a good balance of support and gentle cradling. Although it’s an all-foam mattress, this one is breathable thanks to thousands of perforations that allow continuous airflow.
Material
Foam
Firmness
Soft: 6/10
Trial Period
100 nights
Warranty
10-year limited 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.Financing Options
Financing options are available for this mattress.
Casper
The Casper stands 12 inches tall and features four layers wrapped in a durable polyester fabric. The first layer is AirScape™, a proprietary comfort foam that gives the mattress bounce and breathability. The second layer is made up of 2 inches of Zoned Support™, a firmer transition layer in the bed's center. This layer is designed to be firmer where your heavier areas are located and softer around the shoulders and knees for pressure relief. As a result, this should provide optimal spine alignment. The bottom layer is a dense foam that gives the mattress durability, provides support, and serves as the overall foundation.
Read More: Our Top Memory Foam Based Beds

Comparing Firmness/Support and Comfort
Amerisleep Firmness
The Amerisleep beds range from Soft to Firm, placing them between 4 and 7 out of 10, with 10 being the most firm.
The softest beds also deliver very little motion and provide a tight cradling effect which is something that you need to be a fan of in order to like (and many people enjoy it). However, they may be preferred by people who are lighter in terms of weight and who like to sleep in one sleeping position or their side throughout the entire night. Those who partake in the free faller sleeping position may want something firmer. The Amerisleep AS3 model is a medium feel, which should provide a middle-ground feel, blending soft pressure relief with sturdy support. The AS1 and AS2 are firmer, while the AS4 and AS5 will be softer.
Casper Firmness
The firmness of Casper's beds is easily defined as medium to slightly firmer. Ranking between 6 and 7 of 10, the mattress provides additional support. The 4 layers of different foam can provide a slightly expressed hug and cradling effect just like the mattresses of Amerisleep, but it is pretty minimal overall.
Additionally, you are likely to feel that the bed is firmer if you are heavier. This is because your weight will cause an additional sinkage and interaction with the inner layers of the mattress which are known to be somewhat firmer.

Casper vs. Amerisleep Compared Side by Side
Features | Amerisleep | Casper |
---|---|---|
Material and Cover | Bio-Pur+, SMT, Bio-Core Support Foam | Poly foam, memory foam and support foam |
Height | 12 inches | 10 inches |
Firmness | 4-7/10 | 6/10 |
Motion Transfer | Very little | Minimal |
Support | Great | Great |
Warranty | 20 Years | 10 Years |
Trial Period | 100 nights | 100 nights |
Should I Buy the Casper or Amerisleep Bed?
The truth is that they are better in their respective ways, based on what you want. Both mattresses have certain specifics that you ought to consider. With this in mind, we've come to the following suggestions:
You Should Buy Casper if you:
- Are slightly heavier and prefer to sleep on firmer beds. This can help to provide optimal spinal alignment, and it should prevent any associated back or neck pain.
- If you prefer the free faller sleeping position. If you like to sleep on your belly, a firmer bed can provide you with additional support which is something that you should opt for. Make sure to buy an appropriate pillow if that's the case as well.
- If you want a more responsive bed. If you prefer to be able to move on your bed without any additional hassle freely, the Casper will provide you with movability and bounce thanks to the thin top layer of responsive foam.
You Should Buy Amerisleep if you:
- If you are a fan of medium beds. This is usually recommended to people who are less heavy in terms of weight, those with pressure reduction needs, and side sleepers.
- If you prefer sleeping without moving. The cradling effect here is more strongly expressed, and you may find it easier to lay still and sleep in one position.
As you can see, there are quite a few things which ought to be considered. Even though we couldn't define a direct winner in this Amerisleep vs. Casper mattress comparison guide, it's worth noting that both beds may be better than the other in certain aspects. However, the choice would ultimately rest with you and your sleeping preferences and requirements.
Product
Firmness
Trial Period
Sources and References:
- 10 Benefits of a Memory Foam Mattress – amerisleep.com
- 7 Reasons Why The Casper Mattress Is The Easiest Purchase You'll Ever Make – blog.casper.com
More Amerisleep Comparisons:
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.