The mattress industry came up with the term edge support — the encasement around the frame that spring mattresses require to support the springs.

At Casper, sleep is our top priority, so our bed is designed to allocate pressure and support you when you sleep, not when you sit. Foam beds don’t need the encasement, and our in-house product engineering team chose not to add artificial hardening agents along the edges of the bed to make it more environment- and human-friendly.