Obus Contoured Seat Cushion Black (Bagged) Camping Gear Precision sealed wheel bearings in Color:Yellow Precision sealed wheel bearings in front and rear ensure long lasting performance and reliability * Skillbuilders© premium rolls and wedges have an integral waterproof polyurethane coating that is easily maintained * Supports knees and lower legs when user is in supine position Black * The ultra seat provides ultra comfort from reduced pressure and evenly distributed body weight * Removable front panel for smaller seats * Molded impact resistant frame * Tabs attach to any backrest support for a complete seating system * Use anywhere in the office at home or in the car * Cover can be spot washed * Use together with any Obusforme backrest support * Item measures 15Û L x 15 W x 3Û H *