Choose from the available sizes. Firm hybrid pocket springs and memory foam mattress. 15.75 in. thick memory foam and individual pocket springs. Tencel elite cover wicks away moisture. 3C memory foam contours to your shape. Quantum Edge surface for full edge support. Compatible with adjustable base. 10-year non-prorated manufacturer's warranty. The Homestead Superior 15.75 in. Firm Adjustable Base Compatible Mattress with Advanced Performance Memory Foam and Pocket Springs is a firm hybrid mattress that's compatible with your adjustable base. To ensure a deep, restful sleep, it boasts a layer of memory foam that contours to your body, individual pocket springs for flexible support, plus a Quantum Edge foam surface. Its smooth Tencel elite cover is adept at wicking away moisture, so you sleep cooler. This mattress comes in a choice of available sizes. Size: California King.