Casper One Mattress

The Casper One is engineered with a firm feel specifically designed for back and stomach sleepers who need extra spinal support. If you primarily sleep on your side, you may find this mattress too firm, as it lacks the deep sink-in softness typically required to cushion the shoulders and hips.

No, the Casper One includes a responsive airflow foam layer designed to promote breathability. While it is an all-foam mattress, this top layer helps dissipate heat to keep the surface temperature comfortable throughout the night.

The mattress features motion separation technology, which is highly effective at absorbing movement. This means you are unlikely to be disturbed by a partner shifting positions or getting in and out of bed.

Yes, the Casper One is fully compatible with adjustable bases. Its construction is flexible enough to bend with the base while maintaining its structural integrity and support.

The mattress arrives compressed and will begin expanding immediately upon opening. While it is ready to use shortly after setup, it can take up to 24 to 48 hours to fully expand to its 11-inch profile and reach its final firmness level.

The Casper One is designed with a dense core and a memory foam middle section to prioritize spinal alignment. This firmer foundation helps prevent sagging and keeps the spine neutral, which is often beneficial for those who experience back tension.