The Stanhope St. Thomas is state of the art design and Technology. A cool to the touch circular stretch zipper cover provides cooling, support and motion separation between sleepers. The St. Thomas delivers deep conforming comfort and elimination of surface transfer. As an all-foam mattress, the thoughtful layering of high-density foam support layers affords maximum support and comfortability. The addition of Embrace Foam allows the bed to conform around your body. The addition of Gel Shade Foam provides both cooling and support to provide a great night sleep. This group includes Twin XL mattress and foundation. This group includes Queen mattress and foundation.