Discover the luxury of the Millennium 2.0 hybrid twin XL mattress. Temperature-regulating material in the stretch knit cover keeps you at a comfortable temperature all night long. Its gel memory foam and body contouring foam provide firmness and restorative support. The premium pressure-sensitive NanoCoil unit and individually wrapped coils help to provide a great night's sleep. Plus, this mattress arrives in a box for quick and easy setup. Simply bring it to your room, remove the plastic wrap and unroll.