Casper Wave Vs. Amerisleep – Which Should You Choose?

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[Editor’s Note: Casper no longer offers the Casper Wave mattress without coils, but they do offer an updated Casper Wave Hybrid. Take a look at our most up-to-date Casper Wave Hybrid mattress review.]

Casper Wave and Amerisleep are two all-foam mattresses you can purchase online. The Wave is a luxury model from veteran bed-in-a-box maker Casper, while Amerisleep is a model of mattress that comes in different levels of firmness. This post will compare the mattresses to help you determine which might give you a better night’s sleep.

Key Similarities

  • Both are all-foam options and both incorporate memory foam.
  • Both can be suitable for side sleepers.
  • Both offer 100-day trials and offer free shipping.

Key Differences

  • Amerisleep varies more in price ($849 to $3,498 for different Amerisleep options; $1,095 to $2,395 for Casper Wave).
  • Amerisleep offers thicker options. (Amerisleep options range from 10″ to 14″; Casper Wave is 11.5″ thick.)
  • Amerisleep has more of a traditional memory foam feel.
  • Amerisleep offers more firmness options.
  • Casper uses Certi-PUR certified foams. This certification means these materials are considered more eco-friendly than typical mattress materials.
  • Casper has zoned support, meaning the mattress is firmer in some parts and softer in others to better accommodate different areas of a sleeper’s body.

Man pressing down on foam layers in mattress

Casper Wave Construction

  • Casper Wave’s cover is thick, soft, and durable that doesn’t affect the overall feel of the mattress significantly.
  • On top is 1″ of proprietary “Flo Foam.” This is a soft material that helps relieve pressure.
  • The next layer is 1.5″ of supportive latex foam.
  • In the middle is 1.5″ of responsive, visco-elastic memory foam.
  • The second-to-last layer is 1.5″ of high-resiliency foam with a polymer network.
  • The base is 5.5″ of support foam with contour cuts to create the Wave’s zoned support system.

Read our full Casper Wave Review HERE.

Amerisleep AS4 layers
Amerisleep AS4

Amerisleep Construction

  • Amerisleep offers five firmness options. The 10″ thick AS1 is the most firm, and the 14″ thick AS5 is the softest. Construction is similar across models. The five firmness options are explained in greater depth here.
  • All models use a Celliant fabric cover, which evenly distributes thermal energy. Celliant is said to help with muscle recovery and is incorporated into some athletic clothing.  
  • All models have a top comfort layer of Amerisleep’s Bio-Pur memory foam, with thickness varying by firmness level. This special foam is designed to ensure cool sleeping.
  • The softest option, AS5, has under its Bio-Pur layer an additional layer of an especially soft foam. This layer is is not included in other models.
  • A supportive transition foam layer comes in as the third layer for AS5, and second layer for medium-firm options AS2, AS3, and AS4. This layer is thickest in the firmer AS2 and thinnest in the softer AS4. AS5 also has a layer of this material.
  • All models except AS1 have a 7″ base layer of dense support foam.
  • AS1 has only two layers. It goes straight from the Bio-Pur comfort layer to a dense, 8″ thick base layer. The thickness of this firm base layer and lack of middle layers make AS1 firmer.

Read our full Amerisleep Review HERE.

Construction Differences/Notes

  • Both are all-foam and have responsive surfaces.
  • Amerisleep has more firmness options.
  • Amerisleep has more of a memory foam feel, whereas the Wave has a more balanced foam feel.
  • Amerisleep uses Celliant, a material said to help with muscle recovery.
  • The Wave conforms more easily to contours than Amerisleep.
  • The Wave has five layers, while Amerisleep’s softest option tops out at four layers.
  • The Wave has a zoned support system, meaning it has different levels of firmness in different sections of the mattress.

Firmness/Feel Differences

Amerisleep and Casper Wave both offer responsive surfaces, but the Wave’s material is a little more elastic. The Wave is similar in firmness to the Amerisleep AS4. The Wave is also zoned, meaning you can feel a little bit more firmness in the middle of the mattress.

Motion Transfer Differences

Both absorb and isolate motion well. Amerisleep’s softer options do this better than its firmer options. I believe both choices will be good for couples. For more information, it may be helpful to look at our other popular Casper Wave and Amerisleep comparisons like Casper Wave vs Leesa and Amerisleep vs Loom & Leaf.

Pick Casper Wave If …

  • You sleep in multiple positions- The Wave features a zoned construction, meaning it is softer underneath the shoulders and firmer underneath the hips. This makes it a good choice for all three sleeping positions (back, stomach, and side).
  • You want a medium firmness- If you know you want something of medium firmness, you may not need all the firmness options from Amerisleep.

Pick Amerisleep If …

  • You like memory foam- Amerisleep has a traditional memory foam feel that will be comfortable for people who like the material.
  • You want a specific level of firmness- Amerisleep comes in five firmness options, while the Wave comes in only one firmness level. 

RELATED: Top Memory Foam Picks Of The Year


These mattresses have overlapping qualities, and sleepers who are looking for medium firmness may need to think a bit about which fits their preferences. Hopefully this comparison helped you narrow your considerations while you search for the right mattress. Please share any specific questions about either brand in the comments.

Gravatar for Joe Auer

Joe Auer

Joe Auer is the editor of Mattress Clarity. He mainly focuses on mattress reviews and oversees the content across the site.

He likes things simple and take a straightforward, objective approach to his reviews. Joe has personally tested nearly 250 mattresses and always recommends people do their research before buying a new bed. He has been testing mattresses for over 5 years now, so he knows a thing or two when it comes to mattress selection. He has been cited as an authority in the industry by a number of large publications.

Joe has an undergraduate degree from Wake Forest University and an MBA from Columbia University.