| Best Solution For |
- Back and stomach sleepers.
- The no-brainer mattress choice.
One features an all foam construction with a medium feel, making it perfect for any sleep style. Let's take a look under the covers
The One for every body. And everybody.
Classic Casper Feel
Responsive, supportive foam with the perfect bit of bounce our sleepers love.
Long-Lasting Support
Layers of premium foam are engineered to be as durable as they are cozy.
Perfected Over 10 Years
We redesigned our "one perfect mattress" with 10 years of feedback to make it even more perfect-er.
See why customers love The One
Review Rating: 5 stars I actually had to hunt down the AirBNB we stayed at to find this mattress. We had tried 3 others and they couldn't compete... as a side sleeper, it's just as great for me and my stomach sleeping husband... I'd pay double for this bed.
Karie Port Charlotte, Florida 30% OFF Quick view The One Review Rating: 5 stars After 2 nights on my new Casper mattress I'm sleeping better than in years. I haven't been able to sleep on my side for long periods...but now I can without pressure on my joints. I'm no longer waking up with body aches and soreness.
Donna Colorado City, CO 30% OFF Quick view The One Review Rating: 5 stars I have never slept better, I didn't realize what sleep was before this mattress, life changing.
Joshua Oxford, CT 30% OFF Quick view The One
Compare This Mattress
Not every mattress is for everyone. Take a look at our other models to see which is the best for you. YOU'RE VIEWING
The One
Size: Queen Price: $1,245 Sale Price: $870 $435 UPGRADE
Dream
Size: Queen Price: $1,875 Sale Price: $1,305 Mattress Feel ? We know that every body is unique, so we design our mattresses with a range of firmnesses.
Medium-Firm
Firm
Soft
Medium
Firm
Soft
Ergonomic Support ? Support where you need it most. Firmer foam under your hips, waist, and lower back and precisely cut channels designed to help align your spine.
Continuous Support
Expertly engineered layers of foam that provide consistent support and long-term durability. Zoned Support
Added layer of zoned foam and flex coils give you enhanced support and alignment where you need it most. Cooling & Breathability ? Keep cool all night with breathable foams and Snow Technology.
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. Mattress Construction ? We offer both soothing all-foam and responsive hybrid constructions to make sure every sleeper gets their favorite feel.
11" Foam Mattress 12" Hybrid Mattress Mattress Layers ? Every Casper mattress is engineered with features and layers you need for better sleep.
4 Layers 5 Layers .experience-custom_assets-bvreviews { visibility:hidden; height:0px; overflow:hidden; }
Details Details
The mattress that broke the Internet-reimagined. Questions
Ratings & Reviews
21998 Reviews
4.5 out of 5.0
5 Stars
(15667) 4 Stars
(2843) 3 Stars
(1606) 2 Stars
(956) 1 Stars
(926) Review this product
Place a review Adding a review will require a valid email address for verification. Filter reviews by: All Models The One The Casper Mattress Original Select Ratings 5 Stars 4 Stars 3 Stars 2 Stars 1 Stars
• (5 Stars)
Loved it
Great mattress. Would buy again.
Product: The One
Maggie
27 days ago
Disclaimer: This review is of a mattress of a comparable feel.
(5 Stars)
Great mattress, great price!
Bought two of these mattresses to use with Caper adjustable bed frames. Mattresses are light, comfortable, firm but not too firm, and really nice to sleep on. Great for watching TV in bed, too (thanks to the adjustable frame, of course). Overall, would recommend. No real downside to this mattress other than having to give ir time to be fully ready after unpacking. We don't have a lot of extra space here for that, but we found a way to make it work.
Product: Casper Mattress 2023
Shawn
2 months ago
Disclaimer: This review is of a mattress of a comparable feel.
This review was incentivized.
(5 Stars)
Great Mattress for Great Sleep
When my husband and I first laid down on this mattress we were honestly concerned that it was going to be too firm, but we're approaching almost two weeks of ownership and I don't think either of us has slept this well in years. I have chronic pain that focuses on my back and hips and I'm used to waking up as sore as I went to bed, but I'm actually seeing some moderate improvement in the morning. Moderate improvement might not sound like a miracle to most people, but it feels like one to me. We're very happy with our purchase, and would definitely buy another mattress from Casper.
Product: The One
Erin
3 months ago
Disclaimer: This review is of a mattress of a comparable feel.
This review was incentivized.
Reply from Casper:
Thanks for choosing Casper! We're so glad to hear that you're both loving The One and resting easier. Give us a shout if you need anything, our specialists are here to assist with all things sleep!
• (5 Stars)
Fantastic mattress!
The One Mattress is fantastic! This is my second Casper mattress and I can't wait to recommend it to my friends!
Product: The One
Hsiao-Fan
3 months ago
Disclaimer: This review is of a mattress of a comparable feel.
This review was incentivized.
(5 Stars)
Best bed yet
I actually had to hunt down the AirBNB we stayed at to find the mattress. We had tried 3 others and they couldn't compete. Very firm bed but as a side sleeper, it's just as great for me as my stomach sleeping husband. I know reviews state otherwise, but not having my hip sink 3-6 inches while the mattress stays level and firm is amazing. I'd pay double for this bed.
Product: The One
Karie
3 months ago
Disclaimer: This review is of a mattress of a comparable feel.
This review was incentivized.
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Talk to a Sleep Specialist
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Our award-winning customer service can answer any of your sleep questions. Take a test nap
Try out one of our mattresses in person at one of our stores. Find a location near you. Give us a ring
Our Sleep Specialists are here to help you find the mattresses of your dreams. +1 888.498.0003
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Included with every Casper mattress
Free shipping and returns* 100-night risk free mattress trial 10 Year Limited Mattress Warranty*
Quick, simple financing options
Compatible with most bed frames
* Select products ineligible for free shipping or returns where indicated. Additional shipping fees apply to AK and HI.
Sleep now, pay over time.
Flexible payments - pay over 3-24 months with rates as low as 0% APR, subject to eligibility. Zero credit required. Lease to own. Pay over time on your schedule. document.addEventListener('DOMContentLoaded', function() { // Find the accrue-savings-placement element const accrueElement = document.querySelector('accrue-savings-placement'); // Clone the element const clone = accrueElement.cloneNode(true); // Find the div with class 'katapult-price-calculator' const referenceDiv = document.querySelector('.katapult-price-calculator'); // Insert the cloned element after the 'katapult-price-calculator' div if (referenceDiv) { referenceDiv.insertAdjacentElement('afterend', clone); } }); accrue-savings-placement { margin-top:1rem; } #financing-options .text-and-icon-block-layout__content .experience-components { flex-wrap:wrap } .Text_typography_small__124g65bm { font-size: 12px !important; color:#151515 !important; letter-spacing:0.6px !important; max-width: 350px; } #accrue-billboard .Text_typography_small__124g65bm { font-size: 16px !important; max-width: auto; } .text-and-icon-block-asset .image-wrap+.description { margin-top:0px; } @media (min-width: 576px) { #financing-options .text-and-icon-block-layout__content .experience-components { flex-wrap:no-wrap; } .text-and-icon-block-asset .image-wrap+.description { margin-top:1rem; } } @media (max-width: 575.98px) { .text-and-icon-block-layout__content .text-and-icon-block-asset .image-wrap img { width: 120px; height: 120px; } } @media (max-width: 575.98px) { .text-and-icon-block-layout__content .text-and-icon-block-asset .description { display: block; } }
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Frequently asked
questions
Does The One memory foam mattress sleep hot?
All of our mattresses are specifically designed to sleep cool. We run thermal imaging tests and sweat tests to make sure our mattresses feel nice and breezy throughout the night to keep you comfortable.
If sleeping hot is a challenge for you, Snow Technology is our most advanced solution to nighttime overheating. The combination of HeatDelete™ Bands, Phase Change Material, and cooling Snow Cover keep you comfortably cool from the moment you crawl into bed.
Which is the firmest mattress in the assortment?
The "One" is the firmest mattress in our collection. It is an all-foam mattress made with Breath Flex Foam, Align Memory Foam, and a Casper Core for those seeking the best memory foam mattress experience at an affordable price. The One is firmer than our previous value model, The Casper.
I have The Casper and I wanted another. Which mattress should I buy now?
If you loved the Casper you'll love the upgraded One. This all-in-one sleep solution is slightly firmer but still has the signature Casper feel. The all foam mattress is made with Breath Flex Foam, Align Memory Foam, and a Casper Core, making it an excellent choice for anyone looking for a memory foam mattress upgrade.
What kinds of bed frames are compatible with Casper mattresses?
Casper mattresses are designed to work on a firm, solid surface like our foundation, platform, or adjustable bed frame. Having the correct support ensures the performance and longevity of memory foam mattresses.
For slatted frames, we recommend using bed slats that are flat (not bowed), wooden, and no more than 4 inches apart.
I need a split king base. Do you offer that?
We do! For those who aren't familiar, a split king basically means the frame comes in two parts. With an adjustable base, the two parts are able to work separately or sync together - so you can use the base with two twin XL mattresses or a single king mattress.
Our Cal king adjustable base is also split, but can only be used with our Cal king sized mattress.
What is a mattress in a box? How long does it take for a Casper mattress to expand?
A mattress in a box is a mattress that's compressed in an air-sealed bag and rolled tight so that it can fit into a box that's easier to maneuver than a traditional mattress. Allowing you the flexibility and convenience of picking your mattress online and having it easily delivered to your door.
When you receive the mattress, all you'll need to do is pull it out of its packaging, lay it flat on your bed frame or floor, and let it expand.
Foam and hybrid mattresses can be slept on almost right away but may take up to 48 hours to expand fully. Our Snow mattresses are primarily made with memory foam and can take up to 72 hours to expand fully.
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