Casper One Foam Mattress Assessment 2024: Testing Casper’s New Flagship Mattress




Casper One Foam


  • Agency profile for again and abdomen sleepers

  • Accommodating total really feel

  • Wonderful movement isolation

Don’t love

  • Not as accommodating because the previous mannequin

  • Not possibility for aspect sleepers

Product particulars

  • Sort

    Agency foam mattress

  • Firmness

    Medium-firm to agency or 8

  • Trial

    100 Nights

  • Guarantee

    10 12 months

  • Value


Casper is likely one of the authentic bed-in-a-box mattress manufacturers and has up to date its mattresses many instances over the previous six years. In 2024, Casper did a full redesign, introducing 5 brand-new beds. The brand new Casper One is meant to be its entry-level foam mattress in the identical spirit as earlier iterations of the Casper Unique and The Casper mattress. 

Learn extra: Greatest Mattress for 2024

First impressions of the Casper One Foam mattress


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I used to be excited to unbox the entire new Casper beds as a result of we have at all times regarded these standard beds extremely. We acquired the entire new beds in our workplace on the identical day, and it was a really chilly day outdoors when the packing containers arrived. Typically, we’ll wait a day or two earlier than unboxing a brand new mattress, however we unboxed these mattresses proper off the truck. 

That is essential as a result of the temperature can have an effect on the rigidity of foams, and once we eliminated the Casper One from the plastic, it was some of the misshapen-looking beds I’ve ever seen. I had chuckle about it as a result of it seemed humorous, and we knew it was not as a result of some defect within the mattress. Beds usually look misshapen proper out of the field, however this one was fairly excessive.

It took a few full day for the mattress to totally inflate and get into its regular form, and I may begin getting my first impressions of the Casper One. I used to be instantly shocked when attempting the Casper One for the primary time as a result of it was a lot firmer than I would anticipated. Earlier fashions of Casper foam beds have been often round a medium on our firmness scale, and it was clear that Casper was entering into a wholly totally different course with the Casper One.

Video: Casper One Foam assessment video

Watch me assessment the Casper One Foam mattress on this video. 

One Foam building and really feel


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The Casper One Foam mattress has a basic three-layer all-foam design, which is what we noticed on the previous fashions of Casper and beds from many different manufacturers, together with Nectar, Bear, Leesa and Nolah. 

The bottommost layer is a 7-inch layer of Casper Core assist foam, which is the primary assist layer of the Casper One. That is the one mattress out of the 5 new beds from Casper that includes a foam assist layer as a substitute of pocketed coils. I usually choose coil beds for the added bouncy really feel, and coils are often higher for assist and sturdiness all through the lifetime of the mattress, however there are many sleepers preferring foam beds as a result of foam has higher movement isolation, is simpler to maneuver and is often extra reasonably priced.

Above the assist foam is a 2-inch layer of Align reminiscence foam, after which proper above that’s one other 2-inch layer of Breathe Flex foam. The reminiscence foam layer is classically dense, as you’d anticipate from reminiscence foam, and the highest layer is a extra impartial, responsive foam. 

This mix of foams provides as much as give the Casper One Foam a considerably distinctive really feel. The reminiscence foam layer provides the mattress a dense really feel that’s balanced out by the extra responsive layer above it. I feel the mattress has an identical dense sort of really feel, like a reminiscence foam, however with out the sink in high quality. 

Total, I would describe it as having a agency, dense foam really feel, which is not one thing I’ve noticed fairly often. It is fairly a departure from the previous Casper Unique, which had a delicate, impartial really feel that I might describe as extra accommodating to extra sleepers compared to the Casper One.

Casper One Foam firmness and sleeper sorts


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The Casper One Foam is considerably extra agency than the earlier Casper mannequin. The previous Casper Unique was rated at a medium, however the Casper One is a medium-firm to agency on our scale. It is nearer to a medium-firm than a real agency, however it’s undoubtedly someplace in between.

Casper describes the Casper One as a agency possibility that’s perfect for again and abdomen sleepers, and I completely agree. Should you’re a main aspect sleeper, I might look elsewhere in your subsequent mattress. However for again and abdomen sleepers who need much less give of their mattress, the Casper One has an acceptable firmness profile.

For softer choices from Casper, you may wish to take a look at the Dream Hybrid and Dream Max Hybrid.

Casper One Foam mattress efficiency


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Edge assist

The sting assist of a mattress refers to how nicely the perimeter of the mattress holds up underneath stress. If the sting compresses an excessive amount of, you’ll be able to really feel like you will roll off the mattress, which often results in poor sleep. 

Despite the fact that there is not any design factor meant to particularly improve the sting assist on the Casper One, we noticed fairly strong edge assist on this mattress. I did not really feel that roll-off sensation when placing all of my weight on the perimeter of the mattress, so in case you are planning on sharing this mattress with somebody, I do not suppose you may have any points with edge assist.

Movement isolation

If you end up waking up in the midst of the night time as a result of your associate tosses and turns quite a bit, having a mattress that does job of isolating cross-mattress movement is essential. 

The movement isolation on the Casper One is great, similar to pure reminiscence foam choices like Nectar and Tempur-Pedic. Reminiscence foam beds often carry out greatest on this class and the Casper One makes use of a layer of reminiscence foam together with its foam assist base, so I anticipated it to be good, however possibly not fairly this good. 

If movement isolation is one thing that is been a problem prior to now, then the Casper One needs to be an enchancment. 

Temperature regulation

The highest layer of froth on the Casper One is noticeably totally different from the previous Casper fashions. It was beforehand known as Airscape foam, and I noticed it to be very breathable because of its perforation. The brand new Breath Flex foam on the Casper One is not perforated, however it does have an open-cell design and it is gentle and breathable. 

The Casper One should not warmth up on you at night time, and it ought to stay temperature impartial. Should you sleep scorching on this mattress, it most likely has extra to do together with your sleeping atmosphere than the mattress itself. 

If you would like a mattress with lively cooling components, Casper’s new Snow and Snow Max mattress are noticeably cool to the contact. We even have a greatest cooling beds record you’ll be able to take a look at.

Casper One Foam mattress pricing

Dimension Measurements (inches) Value
Twin 38×74 inches $875
Twin XL 38×80 inches $875
Full 54×75 inches $1,125
Queen 60×80 inches $1.25
King 76×80 inches $1,745
Cal king 72×84 inches $1,745

The Casper One mattress is probably the most reasonably priced of Casper’s new mattress lineup, and when in comparison with the previous Casper Unique, the worth is roughly the identical. For a queen-size, the worth can be pretty aggressive with different three-layer foam mattresses just like the Leesa Unique and the Nolah Unique. 

With these Casper beds being so new, I would not be shocked to see some worth fluctuations, however the One needs to be probably the most reasonably priced mattress from Casper going ahead.

Make sure you take a look at our mattress offers web page for any reductions we will discover to economize on the Casper One.

Casper mattress insurance policies


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Free delivery

Casper One mattress ships inside a field proper to your door at no further price within the contiguous United States. Unboxing a mattress is a fast and straightforward course of: We have performed it actually a whole lot of instances at CNET, and it is truly enjoyable. 

This mattress is fairly gentle, so that you would possibly be capable to unbox it solo, however I would nonetheless suggest getting somebody that can assist you, particularly for bigger sizes. 

100-night trial 

Casper provides the standard normal in-home sleep trial of 100 nights. So that you get roughly three months to check out the mattress and see if it is supportive sufficient and comfy sufficient for you. 

Understand that it may well take a month or longer in your physique to regulate to a brand new mattress, regardless of how well-suited it’s to you. So, for those who wrestle to get night time’s sleep within the first week or two, do not panic.

Return coverage

Casper, regardless of extra manufacturers introducing return charges, nonetheless provides fully free returns on all of its mattresses for those who select to return it throughout the offered trial interval. 

Returning a mattress is often fairly straightforward; you simply contact the corporate, and often, a bunch will come by your own home to choose up the mattress, after which it is going to usually get donated or typically resold by a 3rd occasion.


All Casper mattresses are backed by a normal 10-year guarantee. Should you purchase a mattress on-line, a 10-year guarantee is the minimal you need to anticipate.

Ultimate verdict


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Total, I used to be shocked by the Casper One mattress. When a model redesigns its mattresses, the modifications are often superficial, and the firmness and really feel stay the identical, however the Casper One is an enormous departure from the previous Casper Unique. It is considerably firmer and in addition has a unique really feel.

Previously, I would suggest the Casper Unique to just about everybody as a result of it had such an accommodating firmness and really feel. Most individuals loved it or may no less than get by on it comfortably. The brand new Casper One is a extra specialised mattress that is designed for again and abdomen sleepers, and it has a much less universally satisfying really feel. 

I feel anybody in search of a agency foam mattress at an reasonably priced worth ought to severely take into account the Capser One, particularly as a result of different foam mattresses with this firmness profile usually have a real reminiscence foam really feel, and the Casper One has a extra responsive really feel. 

You would possibly just like the Casper One Foam mattress if:

  • You’re a again or abdomen sleeper
  • You might be in search of an reasonably priced mattress
  • You need a responsive really feel
  • You need a mattress with foam assist layers

You may not just like the Casper One Foam mattress if:

  • You’re a aspect sleeper 
  • You might be looking for a hybrid mattress
  • You might be searching for a extra luxurious mattress
  • You need a basic reminiscence foam really feel

Different mattresses from Casper


Casper’s new Dream Hybrid Mattress.

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Casper Dream Hybrid: that is probably the most reasonably priced hybrid mattress within the new Casper lineup, and it’s primarily a direct alternative for the previous Casper Unique Hybrid. This mattress is a medium on the firmness scale and needs to be accommodating for all sleeper sorts. It additionally has extra of a delicate, impartial hybrid really feel compared to the dense, agency foam really feel on the Casper One. The Casper Dream Hybrid additionally has a zoned-support design, which makes the mattress barely firmer within the heart third to advertise higher spinal alignment and enhanced edge assist.


The Casper Snow Hybrid mattress.

Jonathan Gomez/CNET

Casper Snow Hybrid: this mattress is probably the most attention-grabbing new mattress from Casper as a result of it’s Casper’s first mattress that has a standard reminiscence foam really feel. The highest two consolation layers are product of reminiscence foam that is sluggish to reply. Just like the Dream Hybrid, it has a zoned-support design, enhanced edge assist and a extra accommodating firmness profile. This mattress can be lively cooling, and it ought to assist you sleep just a few levels cooler at night time. 

How does the Casper One Foam mattress examine to related mattresses?

Casper One Foam vs. Leesa Unique 

The Casper Unique and the Leesa Unique was so related I had a tough time telling the 2 aside in a blind mattress take a look at. With the up to date Casper One, these beds nonetheless have an identical design, however the Leesa Unique has extra of a delicate, impartial really feel compared to the dense agency really feel on the Casper One, and the Leesa Unique is a medium firmness, which makes it extra accommodating for aspect sleepers. Each beds are additionally in the identical ballpark on worth.

Casper One Foam vs. Nectar

The Nectar mattress is a really on-line mattress and shares some design components with the Casper One. Each have three-layer all-foam designs (though Nectar does have a separate hybrid possibility for a further price), each are on the agency finish of the spectrum and each use reminiscence foam. Nectar has a basic, dense reminiscence foam really feel, whereas the Casper One has a way more responsive really feel. Nectar can be a extra reasonably priced mattress.

Casper One Foam mattress FAQs

Is the mattress cowl machine cleanable?

No, the duvet on the Casper One does embody a zipper, however Casper says by no means to take away the duvet. If the duvet will get soiled, it needs to be spot-cleaned.

Does Casper have free returns?

Sure, for those who resolve to provoke a return throughout the 100-night trial interval, you will get a full refund and return the mattress at no further price. 

Do I want a basis for the Casper One?

Casper beds are designed to work on a agency, strong floor. It is best to make use of a strong or slatted basis, not a field spring.