How much does it cost, and where can I buy it?

This Casper memory foam mattress is sold by 1 retailer for $874.00. Available at casper.com.

What are the key features?

Key features include Three layers of supportive, pressure-relieving foams, Breathable layers to prevent overheating, Soft-knit cover for extra coziness, Responsive and lively medium-firm feel, and Fiberglass-free.

It's made of foam, polyurethane foam, memory foam, and knit.

What sizes are available?

It's available in twin and full.

What's its coil system type?

Its coil system type is no coils.

Casper One foam mattress with a blue cover in a bedroom setting.

Hand resting on a textured gray surface next to mattress info.

Infographic detailing the foam design and comfort features of the mattress.

Diagram showing the layered structure and support features of the mattress.

Casper

The One Mattress

$874.00

SizeTwin

Available at

casper.comBest Price

$874.00

View

The Casper One 11" Medium Mattress is an all-foam sleep solution engineered for versatility across all sleep styles, including back, side, and stomach sleepers. It features a breathable polyurethane foam top layer for cooling, a layer of Align Memory Foam for pressure relief and spinal alignment, and a durable Casper Core base to prevent sagging. The mattress is finished with a soft, breathable knit Cozy Cover for a plush feel. Recognized by Consumer Reports™ as a top-rated foam mattress in 2026, it offers a balanced medium-firm feel and stable support with minimal motion transfer.

Three layers of supportive, pressure-relieving foams
Breathable layers to prevent overheating
Soft-knit cover for extra coziness
Responsive and lively medium-firm feel
Fiberglass-free
Designed and assembled in the USA
Motion isolation to reduce disturbances from partner movement
Includes a 90-night sleep trial and a 10-year limited manufacturer warranty
Align Memory Foam for pressure relief and spinal alignment
Casper Core Base designed to prevent sinking and sagging

Details

Category: Memory Foam Mattresses
Pattern: Solid, Graphic, Dots
Firmness: Medium firm
Bedding Size: Twin, Twin XL, Queen, King, California king, Double
Mattress Features: Cooling function, Edge support, Noise reduction, Motion isolation, Safe non-toxic materials, Adjustable base compatibility, Hypoallergenic, Removable cover
Coil System Type: No coils
Mattress Top Type: Tight top
Sleep Position Suitability: Back sleeper, Combination sleeper, Side sleeper, Stomach sleeper
Recommended Sleep Position: Back, Combination, Side, Stomach
Materials: foam, polyurethane foam, memory foam, knit
Age: Adult

Questions & answers

How much does it cost, and where can I buy it?: This Casper memory foam mattress is sold by 1 retailer for $874.00. Available at casper.com.
Is it in stock?: Yes, it's currently in stock.
What are the key features?: Key features include Three layers of supportive, pressure-relieving foams, Breathable layers to prevent overheating, Soft-knit cover for extra coziness, Responsive and lively medium-firm feel, and Fiberglass-free.
What is it made of?: It's made of foam, polyurethane foam, memory foam, and knit.
What sizes are available?: It's available in twin and full.
What's its coil system type?: Its coil system type is no coils.