Amerisleep vs. Casper Comparison Reviews 2021

Due to customers’ high demand, we decided to compare a mattress from Casper and Amerisleep to help them shop around. In this guide, we will reveal all the features we reviewed to give you an idea about its similarities and differences. So, keep reading to see which one from Casper and Amerisleep’s mattresses can meet your standards.

Amerisleep Mattress

  •  At a glance: High-performance and eco-friendly mattress  
  • Headline: With the goal to offer a high-quality mattress that is proudly American-made, Amerisleep was founded in 2010. Using cutting-edge components, Amerisleep engineers mattresses with its patented process in manufacturing foam.

Casper Mattress

  •  At a glance: Versatile and affordable mattress  
  • Headline: After years of studying the magic and science of sleep, Casper was born into the mattress industry. Casper believes that great sleep can change everything. If it can make us wiser, faster, more efficient, and warmer, perhaps, it can also make the world brighter.

Quick Synopsis

To give you a glimpse of what we will cover in this post, check out these bulleted points:

Quick Comparison

  • Price – Casper costs less despite being a hybrid mattress.
  • Eco-friendly – Amerisleep is a more environmentally-friendly option.
  • Warranty – Amerisleep offers a longer warranty period.
  • Feel – Casper feels softer and welcoming to accommodate all types of sleeping positions.

Now that you’ve got the gist, it’s time to check out the details below.

Amerisleep Mattress

Best For:

  • Sleepers who prefer sleeping on a memory foam mattress
  • Anyone who wants a firmer mattress to avoid sinking in the bed
  • Back, stomach, and combo sleepers
  • Warm and hot sleepers who need a cooler mattress for more comfort

AMERISLEEP AS3 Memory Foam Mattress

Since Amerisleep offers different types of mattresses, we will focus on its most popular model only for now.


Amerisleep designed this mattress with a couple of layers that make up its 12 inches thick profile. So, let’s start with its cover which is made of a high-performance Celliant. This advanced fabric is made of 13 Thermo reactive minerals that help enhance the overall performance of the AS2 Mattress. Peeking underneath this cover, AS2 Mattress consists of patented Bio-Pur foam. This serves as the first layer of comforting foam that can help you sleep like a baby. Next to this cooling layer is an enhanced layer of foam which Amerisleep calls the Affinity layer. This layer is made with the SMT or Surface Modification Technology which is Amerisleep’s ergonomic transition foam. This layer can handle both heat and moisture in the mattress to make you feel weightless while sleeping on a cloud.


Specifically designed with the back and stomach sleepers in their mind, Amerisleep came up with the AS2 Mattress. This mattress has a medium-firm feel to guarantee you more sleep. From its high-quality cover up to its mind-blowing built and detail, AS2 showcases a performance that is worth investing in.


Compared with the traditional memory foam, Amerisleep designed more superior foam to promote more comfortable sleep. With an open-cell structure, its foam feels cooler and more body-conforming to match your shape, size, and sleeping position. On top of that, Amerisleep’s foam is eco-friendly which replaces petroleum with plants to give you a responsive mattress. Actually, it only takes about 4 seconds for AS2 Mattress foam to bounce back and make you feel less stuck. That’s way faster compared with regular foams that take about 60 seconds to bounce back.

Temperature Regulation

The layer of Bio-Pur foam in AS2 Mattress is specially designed as the cooling layer. If you’ve never heard of this foam before, it is proven to be 5x more breathable compared with most traditional memory foams. This is thanks to its advanced open-cell structure which helps the mattress wick away heat while you enjoy a cozy bed. Meanwhile, its Affinity layer reinforces the Bio-Pur foam in keeping the mattress cool and comfortable. Its precision-cut channels get rid of heat and moisture in the mattress. Its zones also increase the pressure relief capacity of the mattress that target areas along the back and shoulders. Thus, it can make you feel as if you’re floating while in this bed. In addition, Amerisleep holds an official license to use Celliant advanced fabric in its covers. Its combination of 13 minerals also creates Thermo-reactive yarns that can convert your body heat into infrared. This feature comes in handy in helping you soothe your body; make you feel more energized and well-rested.

Casper Mattress

Best For:

  • Sleepers who prefer a combination of foam and spring mattress
  • Anyone who wants a balanced feel with enough softness and firmness
  • Those who want a more responsive feel
  • Back, side, stomach, and combo sleepers

Casper Sleep Foam Mattress

Widely-known as one of the most popular mattresses in the industry, all types of sleepers still love the design of Casper. Since there are two types of Casper Mattress, we’ll focus on the newest model which is the Hybrid version.


Just like Amerisleep’s AS2 Mattress above, the Hybrid version of Casper also has a 12 inches thick profile. Starting with the cover, Casper Hybrid Mattress is encased in a thin fabric that is made of polyester. Under this cover is a layer of 1.5 inches foam which is designed as comfort foam that feels like latex. In case you are not familiar with latex, it is one of the best mattress materials since it is naturally soft. Thus, this means that this foam also adds a resilient layer in the mattress. Its second layer is 1.5 inches foam which is made of memory foam. This pressure-relieving layer can respond fast to your body while its third layer takes over the job of providing support. Its material that provides zoned support is also known as the zoned transition layer. Available in hybrid versions only, this Casper mattress also contains a supportive spring unit. This unit is composed of resilient but gentle spring coils that make up its durable and resilient base. In addition to these layers, this Casper mattress also includes a firmer perimeter. This extra feature makes it easier for sleepers to get in and out of bed without exerting too much effort.


If Amerisleep AS2 Mattress has a medium-firm feel, Casper Hybrid Mattress has a perfect balance of firmness and softness. Despite having a layer of spring unit, this mattress has a medium feel. On a scale of 1 to 10, we’d say that this is close to 6. It may feel a little softer than other hybrid models but it really depends on the weight of the sleeper. But if you have a small to medium frame, you may feel as if it is on the firmer side. Regardless, it has a layer of responsive memory foam that can take care of your weight and size.


Since Casper designed this mattress with multiple layers of materials, you don’t have to worry about its amount of support. For back sleepers, its supportive coils and comfort foam layer can allow your hips to sink into its comforting layer. Its zoned support also targets lumbar areas for additional support. For side sleepers, its pressure relief feature makes it feel softer under their shoulders. Its memory foam layer can absorb the unhealthy pressure from their bodies’ pressure points. In case you are a stomach sleeper, this mattress also feels comfortable. It feels just right under the shoulders, hips, and legs. To promote proper spinal alignment while you sleep, it has softer foams to support back and shoulders areas. To provide extra support for your hips and core, the Casper Hybrid Mattress has firmer foam to handle that. For your legs, it also has a layer of gentler foam to maintain the health of your spine. Of course, its combination of foams and springs, add lift and durability to the mattress to support you longer. It can even help isolate motion throughout the mattress which comes in handy for couples.

Temperature Regulation

Its first layer is breathable foam with an open cell construction to promote better airflow through the mattress. Its supportive coils can also increase the airflow which makes it ideal for warm and hot sleepers. Its responsive coils help its foam layers to absorb heat from your body and circulate it out of the mattress. Thus, you can sleep better and longer with a cooler mattress.


Clearly, the first difference between these mattresses is pretty obvious in its construction. Amerisleep is a foam mattress while Casper is a hybrid mattress. While some heavyweight side sleepers may find the AS2 Mattress convenient, it is primarily designed for back and stomach sleepers only. Meanwhile, the Casper Hybrid Mattress is designed for all types of sleepers with slightly softer feel compared with AS2 Mattress. If you are looking for an eco-friendly mattress with more size, Amerisleep can give you that. AS2 is available in Twin, Twin XL, Full, Queen, King, California King, and Split King while Casper is not available in Split King. When it comes to the customer guarantee, Amerisleep also offers a longer warranty period which is up to 20 years. Meanwhile, Casper offers up to 10 years of warranty only.


To help you make up your mind on choosing the best mattress, check out these guide questions:

How much is your budget?

Casper costs between $716 (Twin) and $1,256 (King and California King) while Amerisleep costs between $799 (Twin), $1,599 (California King) and 1,698 (Split King). If you want a hybrid mattress at an affordable price, Casper is a great choice. But if you’re willing to spend more for a memory foam mattress, Amerisleep is also a good deal.

Do you want a longer warranty?

Though both companies offer a 100-trial period, Amerisleep offers a longer period to decide whether to keep the mattress or not.


I am Linda Jones 26, editor of Matress1000. Our mission is to help people sleep better.