Best-Selling Bundle (The One)

All of our mattresses are specifically designed to sleep cool. We run thermal imaging tests and sweat tests to make sure our mattresses feel nice and breezy throughout the night to keep you comfortable.

If you are a hot sleeper, Snow Technology is our most advanced solution to nighttime overheating. The combination of HeatDelete™ Bands, Phase Change Material, and cooling Snow Cover keep you comfortably cool from the moment you crawl into bed.

The “One” is the firmest mattress in our collection. It is an all-foam mattress made with Breath Flex Foam, Align Memory Foam, and a Casper Core.

A mattress in a box is a mattress that’s compressed in an air-sealed bag and rolled tight so that it can fit into a box that’s easier to maneuver than a traditional mattress. Allowing you the flexibility and convenience of picking your mattress online and having it easily delivered to your door.

When you receive the mattress, all you’ll need to do is pull it out of its packaging, lay it flat on your bed frame or floor, and let it expand.

Foam and hybrid mattresses can be slept on almost right away but may take up to 48 hours to expand fully. Our Snow mattresses are primarily made with memory foam and can take up to 72 hours to expand fully.

Not quite. Both bed foundations and box springs provide a base support layer for any mattress type. However, box springs add a little extra give and increase breathability, while foundations are for overall support.

A box spring is any wood or metal bed frame containing coiled springs covered by cloth. This once-popular design is now mostly found on older beds.

A foundation is any non-spring bed base, from metal or wooden slats to solid platforms. Slat models, often referred to as slatted foundations, provide more air circulation and flexibility, while solid bases give the firmest support.

Both slats and solid foundations are an ideal box spring alternative for better mattress protection.

Learn more in our guide on Platform Bed vs. Box Spring.