The self-contained AIR SPRING ADAPTOR Pad can be used as an interface on virtually any flat or contoured surface to protect soft tissues. Especially useful when cut to fit various surface shapes such as sides of wheelchairs, trays, head and foot rests, inside of helmets, or anywhere uncontrolled movement may need protection. Absorbs shock, protects against shear and friction, enhances soft tissue protection. Standard size 9.5" x 13". Includes Cover, Hand Inflation Pump, Patch Kit, Owners Manual.