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One

Foam Mattress
Price: $1,245 Sale Price: $995
20% OFF

One

Foam Mattress
Price: $1,245 Sale Price: $995
20% OFF
5 out of 5 Customer Rating
Make it a bundle: You save $173!
Waterproof Mattress Protector
Waterproof Mattress Protector
Guards against dirt, spills, and normal wear and tear.
$99
The Foundation
The Foundation
Created to support your mattress. Set it up in minutes with easy, no-tool assembly.
$349
Waterproof Mattress Protector
+
The Foundation
Waterproof Mattress Protector and The Foundation. You save $173!
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In-stock, ships within 1-2 days | Free shipping & returns
One
Price: $1,245 Sale Price: $995

Try it in a store near you
$500 upgrade
Dream
  • Upgrade to Hybrid Technology
  • Added Zoned Support™
  • Responsive Medium Feel

Inside the One

Our signature all foam mattress designed with a responsive yet supportive medium-firm feel is perfect for any sleep style.

Best Solution For: Back and stomach sleepers.

  • RESPONSIVE FEEL: A supportive medium-firm feel with the perfect bit of bounce.
  • BREATHABLE FOAMS: Breathe Flex Foam allows airflow to soothe you to sleep.
  • PRESSURE RELIEVING: Align Memory Foam cradles your body to help you stay asleep.
  • SUPPORTIVE CORE: A firm Casper Core prevents sinking and sagging.

While the Original & The Casper has gone to bed, you can experience the latest in cutting-edge coziness with our new mattress, the One.

Don't Lose Sleep

Twin

38" W x 75" L x 11" H x 42lbs

Twin XL

38" W x 80" L x 11" H x 42lbs

Full

53" W x 75" L x 11" H x 56lbs

Queen

60" W x 80" L x 11" H x 66lbs

King

76" W x 80" L x 11" H x 85lbs

California King

72" W x 84" L x 11" H x 83lbs

  • Top layer of breathable polyurethane foam.
  • Second layer of memory foam.
  • Durable base of polyurethane foam.

Free shipping and free returns*

*Additional shipping fees apply to Alaska and Hawaii. Terms and Conditions apply.

Subject to 10-year Limited Mattress Warranty. Learn More

  • 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.

Got questions?

Our friendly Sleep Specialists are here to help. Give us a call now or visit your local store.

Sleep Easier

Cozy Cover

A buttery soft and airy knit blend helps make your mattress even cozier.

Sleep Deeper

Breathe Flex Foam

A responsive and breathable open cell foam soothes you to sleep with the perfect bit of bounce.

Sleep All Night

Align Memory Foam

Pressure-relieving memory foam cradles your body to help you stay asleep. 

Compare This Mattress!

Not every mattress is one size fits all, so we are here to help you tell the difference between our models.

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One

Size: Queen
Price: $1,245 Sale Price: $995
$500 UPGRADE

Dream

Size: Queen
Price: $1,875 Sale Price: $1,495
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.
Zoned Support
Cooling & Breathability
Keep cool all night with breathable foams and Snow Technology.
Breathe Flex Foam
Breathe Flex Foam
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


Details

The no-brainer mattress choice.

Ratings & Reviews

21989 Reviews
4.5 out of 5.0

Review this product

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  • (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: One Foam Mattress

    Disclaimer: This review is of a mattress of a comparable feel.

  • (5 Stars)

    Foam is great!

    I love me all foam mattress. Simple as. I've been sleeping on Casper memory foam for 8 years now and decided to get a second mattress from them. While firm, it does have a decent amount of give to it that feels like it cradles you while you sleep. Very comfortable, even if sleeping on your side.

    Product: One Foam Mattress

    Disclaimer: This review is of a mattress of a comparable feel.

  • (5 Stars)

    Great for humans, great for pets!

    I have an original Casper Mattress, and purchased a One Mattress for another bed. The One is as wonderful and as comfortable as the original! It felt like my bed as soon as I laid down. My cat immediately got under the covers and slept like a rock. We joked that we were glad to buy the cat a new mattress. I suspect the same effect happens with dogs, ferrets, parrots, and any other cuddly pal!

    Product: One Foam Mattress

    Disclaimer: This review is of a mattress of a comparable feel.

  • (5 Stars)

    Love my new mattress!

    I debated ordering this for about three months, but my mattress was getting so uncomfortable. I needed an upgrade. I read the reviews and chose this mattress and after four nights I am in love! Thank you so much, it is exactly as it was advertised, and I am very happy with my purchase.

    Product: One Foam Mattress

    Disclaimer: This review is of a mattress of a comparable feel.

  • (5 Stars)

    I can sleep for days….

    I’ve slept on a Casper mattress for the last 7 years - best mattress ever. I just got the newer version of the one I had and it’s absolutely divine!! From the moment you crawl into bed, the mattress instantly cradles your body. Not in sinking, plushy way but in a soft tender feeling kinda way. It’s the perfect amount of pressure relief and coziness. It’s so worth the money, you won’t regret it. Thank you Casper for making my sleep hours restful which allow my dreams to last longer…

    Product: Casper Mattress 2023

    Disclaimer: This review is of a mattress of a comparable feel.

Showing 1 to 5 of 21,989 results

Frequently asked
questions

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.

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.

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.

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.

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.

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.