Wolf Corporation Slumber Express Deluxe Ortho Back Aid 9" High Mattress: * Extra firm support * No-flip mattress * Elegant stretch knit cover * Multiquilted with Wolf"s own Aerolife fiber and a layer of dura foam * Sta-rite inner quilted fiber plus a layer of 1" firm foam * High-profile 288-coil innerspring * 3-year warranty * Twin size: 38" x 74" * Full size: 54" x 74" * Queen size: 60" x 80" * Beds sold separately. See our assortment of beds. * Bed frames sold separately. See our assortment of bed frames.