wolf corporation slumber express deluxe back aid 9" high mattress :extra firm support no flip mattress elegant stretch knit cover is multi quilted with wolf's own "aerolife" fiber and a layer of dura foam for comfort sta-rite inner quilted fiber plus a layer of 1" firm foam for support hi-profile 288-coil innerspring for comfort and support 3-year warranty twin size: 38" x 74"x 9" full size: 54" x 74"x 9" queen size: 60" x 80"x 9" beds sold separately. See our assortment of beds.bed frames sold separately. See our assortment of bed frames. great for platform beds. requires foundation or box spring with standard bed frames.foundations sold separately. See our assortment of foundations." wolf brings you name brand quality for less!!