In this post, we break down the major decision makers for choosing between Amerisleep and Casper, both of which are bed in a box mattresses. We’ll go over model options, feel and firmness, price, sleeper types, and more to identify which is the best mattress for you.

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We’re going to go over each of these points more in-depth throughout the post, but here’s a heads up on what we’ll be discussing:

  • Price — Casper is more affordable than even the cheapest model of Amerisleep.
  • Feel — Amerisleep has a responsive memory foam feel, while Casper is a true neutral foam.
  • Construction — Amerisleep offers five models with slightly different constructions. Caper has a zoned support framework.

With the major points outlined, let’s get into the details in the remainder of this review.

Casper vs Amerisleep: Quick Notes

Amerisleep is a well-respected brand that seats itself in the more luxury tier of the online mattress space along with TempurPedic mattresses.

Casper, on the other hand, is one of the founding fathers, so to speak, of the bed-in-a-box mattress industry. One of the originators of the online mattress business model, Casper can probably be credited with the popularization of shopping for a new bed from the comfort of your old one. (Or maybe it’s not that comfortable, which is the problem.)

As any avid internet shopper knows, buying online means thinking about more than just the product—you’ll also need to consider shipping terms, return windows, refund policies, and more.
With online mattresses, you’ll usually get free shipping, a 100-night trial period, free returns with a full refund if needed, and a 10-year warranty if you do keep the bed. That’s the standard set of policies within the bed-in-a-box industry.

If you go with Amerisleep and order from their website, you’ll get all of those standard policies, but with a 20-year warranty, rather than the usual 10. Which, by the way, is already a great warranty term considering you’ll likely be replacing your mattress in about that time anyway.

Casper follows those standard policies exactly as they are because Casper was one of the companies that set the precedent for bed-in-a-box policies.

Amerisleep Mattress Models—Construction And Feel

One of Amerisleep’s big selling points is that they offer five different models that vary in firmness. The idea is that they’ll be able to cater to anyone by covering all their firmness bases.

A simple description of their five mattress models—which they call AS1, AS2, AS3, AS4, and AS5—is that they softer and pricier as you go up the line.

amerisleep mattress firmness

They five models aren’t exactly the same when you check out their insides, but they do all use the same materials. In any given AS mattress, you’ll find two or three of the following materials: Bio-Pur memory foam, Affinity Transition poly foam, and Bio-Core support foam. Whether you’ll find just two or all three of those materials depends on which AS model you’re checking out. If you’d like to see a full breakdown of each of the five models, you can find that in our full Amerisleep review.

amerisleep mattress layers
A look at AS3’s construction

Whichever model you choose, though, you’ll be getting a responsive memory foam feel. While each Amerisleep mattress varies in firmness, the overall feel profile is the same. We definitely consider these memory foam mattresses, and you’ll get that cradling sensation when you lay down on one. These aren’t your stereotypical ‘90s-reminiscent memory foam beds, though. Rather than sinking in and feeling sucked down into the mattress, you’ll find that Amerisleep’s beds are pretty responsive, which means you can turn over and get up without any trouble.

Who’s Going To Like Amerisleep?

With all those options, there’s bound to be something for everyone, right? Well, sort of.

Just about anyone who enjoys memory foam will be a happy camper on one of the Amerisleep models. Because the AS mattresses span the entirety of the firmness scale, any sleeper type will be able to get comfy on at least one of them.

While we think Amerisleep’s beds are going to be great for anyone who’s lightweight or medium-sized, we don’t really think they’re going to be the best beds for folks weighing around 250 lb or more. This isn’t to say that they aren’t quality mattresses, just that all-foam beds are never our first recommendation for a mattress for heavy people since they tend to lack the long-term support and durability of hybrid beds, for example.

amerisleep as5 mattress review
We like Amerisleep’s cover

As a bonus, Amerisleep’s cover is machine washable! We always love a machine washable cover. It’s a pretty rare find in the mattress world, and we count easy cleaning as a plus.

Casper vs Amerisleep Mattress Price

No matter what you’re shopping for, price is always an important consideration. In this comparison, there really isn’t any question as to which option will be the more affordable one.

Regardless of discounts and coupon codes, Casper will be the more affordable pick. Priced at just about $1,100 for a queen size, Casper is strictly average for the bed-in-a-box market. You can check Casper’s price and available discounts here.

casper mattress review original
The new “Original Casper” mattress

Amerisleep, on the other hand, is what we consider a pricey online mattress. Looking at the MSRPs for each model in a queen size, prices range from about $1,200 for an AS1 to around $2,100 for an AS5. If you’re hoping to get an Amerisleep bed at a price that’s a little easier on your wallet, be sure to check the company’s website for any discounts or promotions.

Casper’s Comfortable Feel And Firmness

Casper may be the epitome of what we describe as a bed with a “neutral-foam feel.” Its materials and construction come together to make a bed that doesn’t feel noticeably like any one specific material. It’s not springy like an innerspring mattress or viscous like a memory foam mattress, it’s just nice, soft, and comfy.

On our firmness scale, we rate Casper as a medium. That right-in-the-middle firmness profile also plays a part in how Casper came to be known as such an accommodating mattress. It’s hard to take issue with a mattress that’s just generally comfortable and not extremely this or that. It may not be every person’s precise dream bed, but it’s more than likely that most people will be able to sleep comfortably on Casper.

casper mattress review firmness rating

All in all, Casper is should be a perfectly suitable (and most likely comfortable) bed for a lot of sleepers. Any sleeper type—back, stomach, side, or combo—will be able to get decent support or pressure relief in order to sleep comfortably.

casper mattress review original side sleepers
Side sleepers in particular should really appreciate the Original Casper mattress

Casper is also going to be a suitable mattress for anyone in the petite to average body weight range. For those who are more heavy set, we suggest you look into Casper’s new hybrid models Wave Hybrid and Casper Hybrid. Since coils are incorporated into their construction, the mattresses will be more durable and supportive.

Zoned Support Construction

Zoned support layers are something that we’ve been seeing more of in the mattress industry. Basically, “zoned support” means that the mattress includes a layer that varies in firmness based on where your body needs more or less support. So the top and bottom thirds will be a bit softer to provide pressure relief where appropriate, while the center third will be a bit firmer to support the hips and trunk area.

casper original mattress review zoned support
Here is a look at the whole “Zoned Support” concept inside Casper

We’re fans of Casper’s zoned support framework. It isn’t the kind of thing that’s super noticeable unless you consciously think about it, but we do feel that it’s effective, and we’re glad that it’s not overwhelming or distracting in any way.


Now that you’ve made it all the way through this comparison, we hope you’re feeling a bit more informed and closer to a decision. If you’re still spinning a bit, ask yourself a few questions:

  • Do you like memory foam? If so, Amerisleep may be to your liking. If not, go for Casper.
  • What’s your budget? Casper is cheaper than Amerisleep’s least expensive model.

Want more options? Scroll through our other mattress reviews and mattress comparisons. Don’t worry—there’s a mattress match out there for everyone.

Review team

  • Dillon Payne

    Combo Sleeper

  • JD
    JD Christison

    Combo Sleeper

  • Owen Poole

    Side Sleeper

  • kenzie
    McKenzie Dillon

    Combo Sleeper