The Beauty Sleep® 11.5” medium hybrid mattress is designed for your lifestyle. With a smooth top panel, our Beauty Sleep® 11.5” medium hybrid mattress features AllCool™ gel foam and AllCool™ gel memory foam that contours to your body for the ultimate pressure relief. Our premium foams provide a responsive sleep surface for all-night comfort, support, airflow, and breathability. Plus, firm 815 Original Beautyrest® Pocketed Coils provide consistent, supportive sleep at a value designed for your lifestyle. If you are looking to add a little height to your bed or just simply extend the life of your Beauty Sleep® mattress, the 9" Beauty Sleep® flat mattress foundation is the perfect solution. Designed to provide long-lasting comfort, the Beauty Sleep® flat bed foundation includes a spruce framework and welded steel elements for greater support and durability. Set includes mattress plus box spring/foundation/base. Larger size mattress sets may feature 2-piece side-by-side foundations for easier navigation in tight spaces.