QUIZ RESULTS

Your perfect match is here!

Casper's The One mattress on a bed frame with a blanket and pillows on top in a bedroom setting. At the bottom of the image is the Consumer Reports logo. The One is the top-rated all-foam mattress of 2026. See below to learn more. Consumer Reports does not endorse products or service.
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92% of customers keep their mattress.*
A person's hand presses down to feel The One mattress. It is medium firm and feels responsive and lively.
A person lying on their side on The One mattress. Above the mattress is a list of its features: All-foam design has 3 layers of supportive, pressure-relieving foams. Breathable layers have open-cell foam to prevent overheating. Cozy engineering has wrapped the mattress in a soft-knit cover for extra coziness.
Graphic image labeling the layers of The One mattress. A breathable comfort layer helps you get cozy. Cradling memory foam keeps you aligned and asleep. A durable foam base stays supportive, year after year.
A couple lying on The One mattress tosses a pillow back and forth between themselves
Decade of durability, fiberglass-free, and designed and assembled in the USA.
Video of a couple carrying their new Casper mattress in its box up the stairs and setting it up in their bedroom

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Casper

The One

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Premium Foam Mattress

Sale price $699
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Comp. Value: Regular price $874
Casper's The One mattress on a bed frame with a blanket and pillows on top in a bedroom setting. At the bottom of the image is the Consumer Reports logo. The One is the top-rated all-foam mattress of 2026. See below to learn more. Consumer Reports does not endorse products or service.
Blue icon of a ribbon with a star on a white background
92% of customers keep their mattress.*
A person's hand presses down to feel The One mattress. It is medium firm and feels responsive and lively.
A person lying on their side on The One mattress. Above the mattress is a list of its features: All-foam design has 3 layers of supportive, pressure-relieving foams. Breathable layers have open-cell foam to prevent overheating. Cozy engineering has wrapped the mattress in a soft-knit cover for extra coziness.
Graphic image labeling the layers of The One mattress. A breathable comfort layer helps you get cozy. Cradling memory foam keeps you aligned and asleep. A durable foam base stays supportive, year after year.
A couple lying on The One mattress tosses a pillow back and forth between themselves
Decade of durability, fiberglass-free, and designed and assembled in the USA.
Video of a couple carrying their new Casper mattress in its box up the stairs and setting it up in their bedroom
Cozy Cover

Cozy Cover

Breathable Foams

Breathable Foams

As comfortable as it is affordable.

Expertly engineered to solve your sleep needs without breaking the bank, our signature foam mattress features three layers of cradling foam and a responsive yet supportive medium-firm feel sleepers love.

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Size Guide

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.

King Dimensions 76"x80", California King Dimensions 72"x84"

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.

Full Dimensions 53"x75", Queen Dimensions 60"x80"

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.

Twin Dimensions 38"x75", Twin XL Dimensions 38"x80"

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?

Standard vs King Pillow Sizing
Pillow sizes can vary, but standard pillows, also known as queen pillows, are typically suitable for all types of sleepers. If you prefer extra space or need to fill the width of a larger mattress, king-size pillows, which are about 30% larger, are a great choice.
Select your size:
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Subtotal: Sale price $699
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Comp. Value: Regular price $874
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Sale price $699 Comp. Value: Regular price $874
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Comfort You Can Count On

The One is Consumer Reports' top-rated all-foam Mattress of 2026.*

Read the report

*Consumer Reports does not endorse products or service.
Let's take a look under the covers.
Exploded view of the layers of The One mattress
Exploded view of the layers of The One mattress
Exploded view of the layers of The One mattress
Exploded view of the layers of The One mattress
Exploded view of the layers of The One mattress
If it's in a Casper mattress, it helps you sleep.

See the thoughtful engineering behind The One.

A Casper mattress in the manufacturing facility with a rolling machine on top to guarantee support
A Casper mattress in the manufacturing facility with a rolling machine on top to guarantee support
Decade of durability.

The Casper Core is engineered to support you night after night and year after year.

Get our best savings when you Build Your Own Bundle.

Even your bed needs a bed. Build your sleep setup from the ground up.

Stop-motion video of the Adjustable Base Max's top and bottom being adjusted to various angles. Enjoy endless cozy configurations for reading, relaxing, sleeping, or any bedroom activity.
Stop-motion video of the Adjustable Base Max's top and bottom being adjusted to various angles. Enjoy endless cozy configurations for reading, relaxing, sleeping, or any bedroom activity.
Adjustable Bed Frames
The ultimate sleep setup, with control at your fingertips.

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).

Build Your Own Mattress Bundle Shop Adjustable Bed Frames

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BEST SELLER
The One

The One

Sale price $699
SAVE 20%
Comp. Value: Regular price $874
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Cloud One

Cloud One

Sale price $899
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Comp. Value: Regular price $1,124
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Mattress Firmness
Medium-Firm
Firm Soft
Medium-Soft
Firm Soft
Ergonomic Support
Continuous Support Continuous Support Expertly engineered layers of foam that provide consistent support and long-term durability.
Continuous Support + Edge Support Continuous Support + Edge Support Expertly engineered layers of foam that provide consistent support edge-to-edge and long term durability.
Cooling & Breathability
Breathe Flex Foam Breathe Flex Foam A responsive and breathable open cell foam soothes you to sleep.
Breathe Flex Foam Breathe Flex Foam A responsive and breathable open cell foam soothes you to sleep.
Mattress Construction
11" Foam Mattress
11" Foam Mattress
Mattress Layers
4 Layers
4 Layers

Product specifications

Dream-Worthy Reviews

Real feedback from customers who have experienced the Casper difference.

Overall rating: 4.395269 / 5 from 17798 reviews.

AI Generated Review Summary

The One mattress offers a luxurious and soft feel, providing great support and comfort. Customers appreciate its fast and efficient delivery, easy unboxing, and high-quality construction. While some users experienced back pain, others found relief from pain in their back, hips, and neck. Customer service is highly praised, though feedback on the smell is mixed.

Summary topics

  • Feel: 6%
  • Support: 6%
  • Delivery: 5%
  • Unboxing: 4%
  • Quality: 3%

Review topics: ["softness","installation","size","smell","instructions","replacement","frame","firmness","fit","weight","support","problem","comfort","assembly","quality","handles","material","delivery","design","mattress","customer service","looks","feel","sleep","cover","value","box","work","husband","style"].

Review highlights

  • "Excellent mattress excellent sleep every single time Super soft yet very stable and balanced comfort and support." — Duc
  • "The shipment was fast; the unboxing and expansion of the mattress was surprisingly easy; all in all, a good experience." — Blake
  • "Love the mattress great quality great price great customer service" — Kara

Reviews

The mattress is great except

"The mattress is great except for the perimeter. I feel like I’m ready to fall of when getting out of bed. The edges should have more support. My wife and I like what we’re sleeping on. We bought the ONE."

— Ronald S. (4/5)

I like the comfort and

"I like the comfort and firmness level of this mattress. However, I was disappointed in the quality of the cover associated with the Casper the One mattress. I removed the quilted mattress cover from my previous mattress giving this mattress a much more plush quality. Mattress cover could be improved on."

— Wilhelmina K. (4/5)

This is not medium firm

"I had the original Casper mattress for 10 years, a very firm mattress. This mattress is soft, so soft it's difficult to get onto the bed. Casper is willing to refund me; however, they don't have the original with firmness; that has been redesigned softer. I'm sleeping on a couch as my back hurts terribly on "The One" advertised as medium firm."

— Susan U. (1/5)

The first month felt OK.

"The first month felt OK. But a few months in and I’ve been to an orthopedic specialist multiple times now for back pain that goes away once I get up in the morning and walk around for an hour. Their original mattresses from 2017 were far better, these new ones are way too soft and there’s something amiss. Giving me horrible, lower back and hip pain."

— Cari S. (1/5)

Love the mattress but do

"Love the mattress but do not like that after paying full price I was bombarded with ads for 20% off. Left me feeling taken advantage of."

— Mark A. (5/5)

"I love this matress! I've slept so soundly every night since getting it. It is definitely the one I needed."

— Connie (5/5)

One month

"I've been sleeping on Cloud medium firm mattress for about a month now. The comfort level adjustment from our old Beauty Rest has taken awhile but I can finally say this is a very comfortable mattress and am happy with our purchase."

— Lisa C. (4/5)

I went back to a

"I went back to a foam mattress after trying to be comfortable on a hybrid for 5 years. No longer wake up with an achy back. Great improvement."

— Doris S. (5/5)

I love my Casper mattress!

"I love my Casper mattress! I also got the frame. I could not believe how easy it was to put together, no tools were needed. It took less than 20 minutes to set up the whole bed! I will never get another mattress or bed from anywhere else."

— Vickie r. (5/5)

My husband & I are

"My husband & I are VERY impressed with our new bed & pillows! We sleep better than ever-very comfy!"

— Laurie S. (5/5)

Q&A

Sleep now, pay over time.

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Frequently asked questions

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Find a Casper store near you

Feel the difference in person. Try products for yourself and chat with a Sleep Specialist at a store near you.

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Connect with a Sleep Specialist

Our Sleep Specialists are dedicated to helping you find the mattress of your dreams. Give us a call or chat with us now.

Email us Call +1-888-498-0003