Very comfortable mattress that is
"Very comfortable mattress that is still firm enough that I can sleep on my stomach and still breath"
Premium Foam Mattress
A foam mattress like no other.
Our most popular mattress just got an upgrade. Featuring all-new patent-pending Casper Core+™ technology, Cloud One delivers a boost of plushness while giving you all the support and breathability of The One.
Our most popular mattress just got an upgrade. Featuring all-new patent-pending Casper Core+™ technology, Cloud One delivers a boost of plushness while giving you all the support and breathability of The One.
Which mattress size is right for you?
When picking your next mattress, it’s more than just personal preference—two key things to keep in mind are how much room you have and who’s sleeping in the bed.
Upgrading to a King mattress is a game-changer if you’re sharing space with kids or pets. And if you’re tall, the extra length of a California King could be just right.
A Full size mattress is ideal for young adults or those with a smaller bedroom, while a Queen is the top pick for couples or anyone who enjoys extra space to sprawl out.
The Twin is the smallest option, ideal for single sleepers. While the Twin XL is a dorm favorite it can also create a Split King if you purchase two.
Which pillow size is right for you?
INNOVATIVE Casper Core+™: Patent-pending, cloud-like foam pillars provide a boost of plushness.
ALL-NIGHT COZINESS: Thicker layers of premium comfort foams keep you cradled and aligned.
WAKE UP REFRESHED: Breathability in every layer combats overheating.
DECADE OF DURABILITY: Casper mattresses use the highest-quality foams to stay comfortable year after year.
The Cloud One foam mattress is especially comfortable for stomach sleepers.
Got Questions? Talk to a Sleep Specialist.
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Free, no-contact delivery
100-night risk-free trial*
10-year limited warranty*
A breathable, buttery soft knit cover.
Makes your mattress feel even cozier.
A responsive and breathable open-cell foam.
Designed for great airflow and a little bit of bounce to keep sleepers from feeling overheated or stuck.
Conforming memory foam with continuous support.
Premium foam provides optimal support across the mattress.
Patent-pending cloud-like foam pillars.
Delivers a boost of plushness while giving you all the support of Casper Core.
A firm foam edge on both sides of the mattress.
Makes it easier to get in and out of bed, and gives you more surface for sleeping.
See the thoughtful engineering behind Cloud One.
Casper Core+™ Technology is engineered to support and soothe you night after night, and year after year.
Perfect your sleep setup with the the right bed frame.
Casper has three levels of Adjustable Bed Frames designed to work with any Casper mattress. You can use them on their own, on a Casper slatted frame, or inside your existing frame (just be sure to measure). Every base includes head and foot lift plus Zero Gravity mode, while Pro and Max feature upgraded lumbar support and more. This setup is perfect for sleepers who want full customization and ultimate relaxation (warning: there’s no going back).
Continuous Support + Edge Support
Expertly engineered layers of foam that provide consistent support edge-to-edge and long term durability.
Continuous Support
Expertly engineered layers of foam that provide consistent support and long-term durability.
Breathe Flex Foam
A responsive and breathable open cell foam soothes you to sleep.
Breathe Flex Foam
A responsive and breathable open cell foam soothes you to sleep.
38" W x 75" L x 11" H
42 lbs
38" W x 80" L x 11" H
43 lbs
53" W x 75" L x 11" H
56 lbs
60" W x 80" L x 11" H
66 lbs
76" W x 80" L x 11" H
85 lbs
72" W x 84" L x 11" H
83 lbs
*Core+™ is a trademark of Casper Sleep Inc.
Free shipping and free returns*
*Additional shipping fees apply to Alaska and Hawaii. Terms and Conditions apply.
Returns can be initiated after the 30-Night Adjustment Period.
Subject to 10-year Limited Mattress Warranty. Learn More
Some states charge a Recycling Fee to help fund their mattress recycling programs. This state-mandated fee is added to the cost of each mattress, foundation, and bed frame you order and is not refundable.
* 92% of Casper customers keep their mattress based on a 12-month cohort of customers who purchased between May 2025-Apr 2026.
Real feedback from customers who have experienced the Casper difference.
We are both well into our 80's and we immediately noticed that we sleep better and wake up with less joint pain.
Frank P.
Cloud One
I have lower back issues and restless legs syndrome! This has been a game changer!! I truthfully never expected this and I would never have thought I could sleep this well!
Vickie C.
Cloud One
It has the perfect firmness, yet like sleeping on a cloud. I don’t feel my husband moving during the night. Sleeping soundly and our daily back pain from our previous mattress gone in one night!
Julie R.
Cloud One
Overall rating: 4.3154764 / 5 from 168 reviews.
Cloud One is a highly praised foam mattress known for its plushness, support, and ability to provide deep sleep. It features Casper Core+™ technology for enhanced comfort and breathability.
Review topics: ["feel","support","improvement","problem","quality","size","looks","price","softness","husband","comfort","set","mattress","sleep","bed","firmness","casper","cloud one","back pain","difference","salespeople","sheets","windows","brand","experience","legs","movement","relief"].
"Very comfortable mattress that is still firm enough that I can sleep on my stomach and still breath"
"I love this bed. I’m a side sleeper and it’s so comfortable."
"I tried two other mattresses before this one--both highly rated, medium-firm mattresses, and both felt rock hard to me. The Cloud One is so soft and perfect without being too soft. I can sleep comfortably on my side for hours without waking up in pain like I did with the other mattresses, and I am also super comfy on my stomach and even on my back, which is new for me. I'm about 5'4" and 130 lbs, so maybe I'm just smaller than the average mattress user? I don't know, but this mattress is perfect for me."
"This is my second Casper mattress. I had my first one for about 10yrs and loved it. I spend a lot of my time sitting in my adjustable bed crocheting and when it was time for a new mattress, I thought I would try something new. I got a Ghostbed mattress and it was just too firm. I tried their softer one and it still wasn't as comfortable. So I ordered another Casper and instantly noticed the difference. I'm very happy with my new Casper mattress and will probably never try another brand."
"The mattress was so soft from the beginning and never really bounce back. Wanted to return it before the 30 days, but your company would not allow it!"
"Extremely comfortable but the fumes are terrible. It’s been 2 months and I can still smell chemical type fumes."
"My first bed in a box was an original Casper. Still love it. Bought a cheaper brand for a guest room. Just replaced that for the Casper Cloud One. Will always buy Casper from now on!"
"My biggest problem with this mattress is the fact that it cannot stay at a specific firmness. It went from a little too firm in the beginning to totally too soft in about 4 months. The problem of this is that, if you test it out at the showroom, you wouldn't know how soft it will eventually be, and if you actually get this mattress, you would have gone pass the trial period before you find out you need to return it. I cannot recommend this to anyone."
"Super comfy"
"Very comfortable bed. It made me start to side sleep more often, which I rarely did before as I'm mostly a stomach sleeper. It's a very nice mattress, however."
Feel the difference in person. Try products for yourself and chat with a Sleep Specialist at a store near you.
Our Sleep Specialists are dedicated to helping you find the mattress of your dreams. Give us a call or chat with us now.
Our Comparable Value prices reflect the price at which we or third parties have offered this item or a comparable item.
How does Casper create the best value products for their sleepers?Our team regularly searches the market and tests comparable mattress and sleep products to ensure that ours offer top-quality materials, the most value for your dollar, and the best sleep experience on the market.
Every Casper mattress is designed and assembled in the USA.
As part of the Carpenter Co family, Casper mattresses are manufactured by the largest foam manufacturer in the world—no middle man, no markups, just the best prices for our sleepers.
We don’t rely on gimmicks—just 12+ years of expertise.
With 12+ years in the mattress and bedding industry, the Casper team knows what makes a great night’s rest and what’s just fluff. Our mattresses and bedding are obsessively-engineered and precisely-layered to help you get your deepest sleep ever.
We don’t sleep on getting you the best possible deal.
The Comp. Value shown for Casper products is never set it and forget it. Our team conducts thorough market research every quarter to ensure our comparable value is always accurate to the bedding market and the three most comparable products, so you never have to worry about missing out on savings.
