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Casper The One Medium All Foam Twin Size Mattress

MODEL:

CASPRONE-T
3.3 out of 5 Customer Rating
Casper The One Medium All Foam Twin Size Mattress is rated 4.6 out of 5 by 905.
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View all Casper Twin Mattresses
Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires Casper The One Medium All Foam Twin Size Mattress, , hires
90 Night Sleep Guarantee
90 Night Sleep Guarantee
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Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires Casper The One Medium All Foam Twin Size Mattress, , hires
Click on image to Zoom
Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires Casper The One Medium All Foam Twin Size Mattress, , hires
Click on image to Zoom
Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires Casper The One Medium All Foam Twin Size Mattress, , hires
Click on image to Zoom
Casper The One Medium All Foam Twin Size Mattress, , hires
Casper The One Medium All Foam Twin Size Mattress, , hires Casper The One Medium All Foam Twin Size Mattress, , hires
Click on image to Zoom

Key Features

  • Type: All Foam
  • Size: Twin
  • Comfort Level: Medium
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90 Night Sleep Guarantee If you are dissatisfied with the comfort of your mattress, you can exchange or change it. Learn More! If you are dissatisfied with the comfort of your mattress, you can exchange or change it. Learn More!

90 Night Sleep Guarantee If you are dissatisfied with the comfort of your mattress, you can exchange or change it. Learn More! If you are dissatisfied with the comfort of your mattress, you can exchange or change it. Learn More!

Delivery & Pickup Options

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Accessories

About this Item

Casper The One Foam Mattress

Meet Casper's The One Foam Mattress: a top-rated all-foam mattress engineered for balanced comfort and pressure relief with a medium-firm feel that appeals to back, side, and combination sleepers alike --- perfect for home, guest rooms, and everyday restful sleep.
Casper One mattress on white platform bed frame with striped bedding and green round pillow, bedroom setting with beige carpet, green nightstand, black lamp, and framed artwork on wall. Hand pressing into Casper One mattress surface showing quilted white cover with textured dot pattern, demonstrating mattress comfort and responsiveness with hand sinking slightly into foam.
Cooling Breathable Foam

Open-cell foams increases airflow and improves heat dissipation for a cooler night's sleep --- ideal for warm sleepers.

Pressure-Relieving Support

Align Memory Foam layer cradles shoulders and hips to ease pressure points and reduce tossing and turning.

Durable Support Core

High-density core foam offers long-lasting structural support with minimal sagging.

Soft, Breathable Knit Cover

A premium knit cover enhances comfort and breathability while adding a clean, modern look to your bedroom.

Key Mattress Features:
  • Three layers of responsive foam for balanced comfort and support.
  • Medium-firm feel that suits a wide range of sleepers.
  • Breathable foam designed to reduce heat buildup while sleeping.
  • Soft, breathable knit cover for added comfort and durability.
Who's This Mattress Best For?

Casper The One Foam Mattress is perfect for sleepers seeking an affordable memory-foam mattress with balanced medium-firm comfort, cooling breathability, and pressure relief --- providing night-after-night restful sleep for back, side, and combination sleepers.

Product Height
12 Inches
Product Width
38 Inches
Product Depth
75 Inches
Product Weight (lbs.)
48 Lb(s)
Collection
The One
Series
Not Applicable
Type
All Foam
Size
Twin
Coil Type
Coil Type Not Available
Coil Count
-
Comfort Level
Medium
Comfort Number
3
Construction
Tight Top
Edge Support
Yes
Cooling Technology
No
Hypoallergenic
Yes
Removable Cover
Yes
Adjustable Base Compatible
Yes
Additional Features
As comfortable as it is affordable. Our all-in-one solution for better sleep. Signature all foam mattress designed with a responsive yet supportive medium-firm feel is perfect for any sleep style.
Motion Isolation
-
Warranty Terms - Parts
120 Month(s)
Warranty Terms - Labor
120 Month(s)
Rated 5 out of 5 by from Repeat buyer Purchased a second The One mattress for guest room. Love it just the same! Comfortable from day one. The first purchase (for a different bedroom) is just as comfortable as when it was new. Highly recommend!
Date published: 2026-03-31
Rated 5 out of 5 by from Best money I have ever Best money I have ever spent on anything. Comfortable and quiet. I am sleeping through the night again.
Date published: 2026-03-31
Rated 5 out of 5 by from Bed is very comfortable! Bed is very comfortable!
Date published: 2026-03-30
Rated 5 out of 5 by from I got this mattress for I got this mattress for my birthday. It's the most comfortable mattress I've ever slept on. So glad I decided to get it!
Date published: 2026-03-29
Rated 5 out of 5 by from It’s great ! That’s all It’s great ! That’s all I have to say
Date published: 2026-03-28
Rated 5 out of 5 by from Casper The One review Enjoying the bed very much!
Date published: 2026-03-27
Rated 5 out of 5 by from Best mattress ever I am blown away by how comfortable this mattress is. For the price it’s fantastic. I have already told all my family to get one. The delivery was great. Right to my door in 2 days. No complaints at all.
Date published: 2026-03-25
Rated 5 out of 5 by from I love this mattress. I love this mattress.
Date published: 2026-03-24
Rated 5 out of 5 by from Bed feels alright even though Bed feels alright even though it don't sink much i like it so far however, from the way it came the smell would take time to go away it still attach to bed. I bought this bed sometime early last month where at the end of march now.
Date published: 2026-03-23
Rated 5 out of 5 by from Love it Love it
Date published: 2026-03-21
Rated 5 out of 5 by from Sleep is Great! Sleep is Great!
Date published: 2026-03-20
Rated 5 out of 5 by from My son says his sleep My son says his sleep is much better with the Casper mattress.
Date published: 2026-03-17
Rated 5 out of 5 by from Very happy with the Casper Very happy with the Casper mattress so far.
Date published: 2026-03-17
Rated 5 out of 5 by from super confortable super confortable
Date published: 2026-03-11
Rated 5 out of 5 by from We bought this for our We bought this for our guest bedroom. It was perfect our guests had a good night sleep! No complaints on mattress they said it was wonderful.
Date published: 2026-03-09
Rated 5 out of 5 by from Perfect night’s sleep Perfect night’s sleep
Date published: 2026-03-05
Rated 5 out of 5 by from Very nice especially if you Very nice especially if you like a little firmer mattress. Thanks
Date published: 2026-02-27
Rated 5 out of 5 by from Believe the great ratings! We bought "The One" Casper mattress after checking the Consumer Reports review and we're very pleased with our purchase. It arrived quickly, was easy to set up and provides comfortable, even support for 2 adults.
Date published: 2026-02-27
Rated 5 out of 5 by from My wife and I are My wife and I are very pleased with the Casper The One Mattress. Consumer Reports nailed this one. The mattress is extremely comfortable. It's slightly softer than our previous mattress but this seems to be a good thing. We awake welt rested and with no soreness (hips, shoulders). Truly the sleep-friendly ghost!
Date published: 2026-02-25
Rated 5 out of 5 by from I sleep like a rock I sleep like a rock on this mattress. It's a game changer.
Date published: 2026-02-25
Rated 5 out of 5 by from Love this mattress, it’s perfect. Love this mattress, it’s perfect.
Date published: 2026-02-22
Rated 5 out of 5 by from We really love the mattress We really love the mattress , back to a good night sleep.
Date published: 2026-02-22
Rated 5 out of 5 by from Perfect Perfect
Date published: 2026-02-21
Rated 5 out of 5 by from I had purchased a Casper I had purchased a Casper mattress before and needed another one, just as perfect as the first.
Date published: 2026-02-20
Rated 5 out of 5 by from The new mattress is so The new mattress is so much better than our old one. Thank you so much. We really appreciate it.
Date published: 2026-02-19
Rated 5 out of 5 by from Love Love
Date published: 2026-02-16
Rated 5 out of 5 by from Great choice. I bought this Great choice. I bought this bed for my daughter and her husband and they love it!
Date published: 2026-02-14
Rated 5 out of 5 by from I like the mattress but I like the mattress but I have not been able to use it because of the chemical smell it has when I unpacked it. I would not therefore recommend it to anyone else. I tried to sleep on it at first but woke up with a bad headache. Advise.
Date published: 2026-02-11
Rated 5 out of 5 by from A great investment 👌 A great investment 👌
Date published: 2026-02-08
Rated 5 out of 5 by from So far so good. So far so good.
Date published: 2026-02-08
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