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.

• Medium-Firm Feel – Balanced comfort and support for all sleeping positions.
• Breathable Top Layer – Promotes airflow and keeps you cool throughout the night.
• Align Memory Foam – Contours to your body to relieve pressure points and support healthy spinal alignment.
• Casper Core Base – Prevents sinking or sagging for lasting durability.
• Cozy Knit Cover – Soft, breathable, and durable fabric for a luxurious feel.
• All-Foam Construction – Ensures quiet, stable support with no motion transfer.

• Twin Dimensions: 38”W x 75”L x 11"H
• Twin Long Dimensions: 38”W x 80”L x 11"H
• Full Dimensions: 53”W x 75”L x 11"H
• Queen Dimensions: 60”W x 80”L x 11"H
• King Dimensions: 76”W x 80”L x 11"H
• CA King Dimensions: 72”W x 84”L x 11"H