That said, we think it suits back and stomach sleepers the most.

Lighter weight to average weight side sleepers will need to give themselves time to settle into this one.

It isn’t so much a major departure from the previous model as it is a facelift.

Casper One Mattress dressed in sheets and a comforter, with the box it arrived in next to it

(Image credit: Future/Sophia Carlisle)

It’s rated medium-firm by the brand, although we found it skews slightly firmer.

Our lead tester didnt feel her partner move in or out of their queen-size bed.

Meanwhile, temperature regulation is average.

A queen-size Casper One Mattress on a black bed frame on top of an ornate bedroom rug with shades of red and green

(Image credit: Future/Sophia Carlisle)

Those faults aside, we think the Casper One is a good value for the cost.

That’s our Casper One Mattress review in a nutshell.

Fortunately, regularCasper mattress sales cut 20% to 30% off this already-affordable all-foam bed.

The One - Twin

The Casper One comes with free shipping and returns, a 100-night risk-free trial, and a 10-year warranty.

Those are the industry averages and what you’d expect from a mid-rangemattress in a box.

However, for the best monthlymattress sales, we recommend holding out for Memorial Day in May.

Casper

On top is an open-cell Breathe Flex Foam the company says promotes airflow and cooling.

That’s followed by a layer of Align Memory Foam for pressure relief.

The foundation of the mattress, known as the Casper Core, is meant to prevent sagging.

View Similar Amazon US

The Casper One doesn’t contain fiberglass but instead uses rayon-based fibers to act as a flame barrier.

However, she was pleasantly surprised at the slight give of this mattress.

Coming from an exceptionally plush mattress, the firmness of the Casper One took some getting used to.

Casper One Mattress: from $749 at Casper

We objectively tested the pressure relief of the Casper One by placing a 56lb weight on the surface.

The dumbbell sank about 4 inches.

While they did sink slightly, they still felt aligned throughout the night.

Casper One mattress with one half exposing the inner foam layers

This becomes problematic due to the second layer of plastic protecting the interior of the mattress.

Upon removing the first layer of plastic, the mattress begins to immediately inflate.

It felt like a race against time to remove the second layer of plastic before the mattress fully expanded.

A 56lb kettlebell sinking into the center of the Casper One Mattress to objectively test its level of pressure relief.

Within a few days, there was no smell at all.

We repeated the tests twice for confirmation but the results were the same each time.

The motion isolation here is simply exceptional.

Queen-sized Casper The One Mattress rolled up and wrapped in plastic, positioned at an angle on our tester’s slatted bed frame with an ornate rug underneath

Our tester’s Casper One Mattress, before and after setting it up.(Image credit: Future/Sophia Carlisle)

That was not the case with the Casper One.

The thickness of the cover felt warm beneath the sheets, especially when we had the heat turned on.

If you’re a hot sleeper or dealing with night sweats then we suggest going for a specialistcooling mattress.

An empty wine glass on top of the Casper One Mattress during a motion isolation test

The Casper One Mattress aced our objective and real-world motion isolation tests.(Image credit: Future/Sophia Carlisle)

Some users also commented on the quick and easy delivery and excellent customer service.

Should you buy the Casper One Mattress?

If youre looking for amedium-firm mattressthat wont break the bank, consider the Casper One.

A man in a t-shirt and jeans lying on his back on the Casper One Mattress in his bedroom, with his black and white dog sitting on the other side contentedly

The Casper One Mattress aced our objective and real-world motion isolation tests.(Image credit: Future/Sophia Carlisle)

We think this is thebest Casper mattressfor back and front sleepers.

Side sleepers may not find it comfortable, at least at first, but our tester eventually settled in.

Hot sleepers won’t find the cooling relief they need here, either.

A closeup of the Casper One’s grey knit cover

The knit cover of the Casper One is cozy but might retain some heat.

If you resonate with one or both of those scenarios, consider one of the alternatives below.

Read ourNectar Classic Memory Foam Mattress reviewto learn more.

That’s what you’ll get with the Cocoon Chill.

A queen-size Casper One Mattress on a black bed frame atop an ornate rug with shades of red and green. A black and white dog is laying on top of the mattress.

For more details, check out ourCocoon Chill Memory Foam Mattress review.

Nectar Classic Memory Foam Mattress: from $1,081 now $349 at Nectar

Cocoon Chill Memory Foam Mattress: from $619 $399 at Cocoon by Sealy

Casper Snow Hybrid Mattress: from $1,895 at Casper

The Leesa Original Memory Foam Mattress on a bed frame in a bedroom

Bear Original Mattress placed on a wooden bedframe next to a black highback chair

The foot of the Casper Dream Hybrid, the best Casper mattress for most people

The Allswell mattress review image featuring the mattress on a wooden bedframe in a white bedroom

Casper Comfy Mattress Topper, featuring a woman resting on her back enjoying said topper on her bed

A split image featuring the Nectar Classic Memory Foam Mattress on the left and the DreamCloud Luxury Hybrid on the right, leading into the DreamCloud Luxury Hybrid vs Nectar Classic showdown

The image shows a woman sitting up in bed and clutching her shoulder in pain

The Tempur-Pedic Tempur-Adapt mattress on a bed frame in a bedroom, a man and his young sun sitting on top of it, smiling. A Tom�s Guide price drop deals graphic (right)

A couple using the Scandinavian Sleep Method

Bed bugs

The Saatva Murphy Bed Mattress on a Murphy bed frame lying flat, in a bedroom

Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition on a garden table

Fatal Fury: City of the Wolves

Alienware AW2725Q

The Ordo Sonic+ toothbrush photographed in front of a blue background.

Saucony Endorphin Elite 2

Lenovo ThinkPad X1 Carbon Gen 13 Aura Edition on a garden table