Experience sound sleep with the Elysse Hybrid Mattress. Delivered snugly in a portable box, Elysse features a luxurious unification of individually foam encased 6.25" tall x 2.5" wide pocket coils surrounded by three layers of high quality foam. Topped with a gel-infused surface to keep you climate steady, Elysse is a supportive mattress that quickly dissipates your body heat while conforming to your weight and position. Elysse also minimizes motion disturbance between partners, reduces stress on pressure points, and is CertiPUR-US certified so you can be confident that the flexible polyurethane foam inside the mattress meets CertiPUR-US standards for content, emissions, and durability, and has been analyzed by independent, accredited testing laboratories. Designed from bottom to top with responsive foam, memory foam, and gel-infused memory foam, Elysse comes with a machine washable diamond quilted outer cover and fiberglass cloth inner cover. The mattress comes vacuum-packed and rolled to fit into a box. Please allow up to two days to expanded fully. Boxspring or foundation are optional. Slatted bases should be less than 3" apart. The non-slip bottom consists of a 80% polyester, 20% cotton blend. Set Includes: One - Elysse King 12" Gel Infused Hybrid Mattress with CertiPUR-US Certified Foam.