Casper One Premium Foam 11" Medium Mattress in a bedroom setting.
Hand on a mattress labeled 'Medium Firm' with text 'Feels responsive & lively'.
A Casper One mattress shown from a front angle against a neutral, light beige background. The mattress features a textured light gray fabric on the top and side, with a solid dark blue end cap on the right side displaying the white 'Casper One' brand logo.
Casper mattress with Consumer Reports logo and text on a bedroom setting
Casper mattress on a bed with pillows and bedding in a room setting.
Casper One Premium Foam 11" Medium Mattress in a bedroom setting.
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Person lying on a bed with text describing mattress features
Mattress with labeled layers on a bed frame, highlighting foam types.
Casper One Premium Foam 11" Medium Mattress against a white background.
Casper One Premium Foam 11" Medium Mattress against a white background.
Two people playing with pillows on a Casper mattress
Ahorras $175
Casper
Mattresses

Casper One Premium Medium Mattress

$699 $874
The Casper One Premium 11" Medium Mattress delivers balanced comfort and support for all sleeping positions to help you feel supported throughout the day.
Size: Twin
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HSA/FSA Eligible for qualified customers.
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  • Estimated to ship: Oct 13 - Oct 17
  • In-store purchases may deliver faster.

Product Description

Discover the comfort that made Casper a trusted name in sleep with the Casper One 11" Medium Mattress. Engineered for all sleep styles—back, side, and stomach—this all-foam mattress delivers the perfect balance of contouring comfort and responsive support.

The top layer of breathable polyurethane foam promotes airflow. It keeps you cool, while the second layer of Align Memory Foam gently contours to your body, relieving pressure points and supporting spinal alignment. A durable Casper Core base prevents sinking or sagging, ensuring long-lasting comfort night after night.

Wrapped in a soft knit Cozy Cover, the Casper One provides an inviting, plush feel that enhances your overall sleep experience.

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In-Store In-store purchases may deliver faster, with personalization options available. 

Why It Works

One Feel That Works for Every Position

A medium-firm feel is designed to balance comfort and support whether you sleep on your back, side, or stomach.

Stays Cool Where You Sleep

A breathable top layer promotes airflow, helping you stay cooler through the night.

Simple, Focused Construction

An 11-inch profile keeps the design straightforward, delivering reliable comfort without unnecessary bulk.

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In their own words

Two delivery professionals unloading a wrapped mattress from a white van outside a home.

Choose white glove delivery and our trained professionals bring your solution inside, assemble, position exactly where you want it, and make sure it’s ready to use.

No hauling. No guesswork. No leftover cardboard.

Ideal for larger items like massage chairs, adjustable mattress sets, and zero gravity recliners. Because the only thing you should have to do is sit down and feel the difference.

Product Questions & Answers

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