Protekt O2 Wheelchair Cushion 20 x16 x4 with Pump Scales Dial Waist High With Tray & Measuring Tape Style:Right Ear With Tray & Measuring Tape * Heavy duty steel base for improved strength and durability * Factory calibrated to ensure accuracy * Easy to clean trays and seats guarantee long lasting reliability * Rotating poise bars for dual reading of pounds and kilograms * Dimensions: 80 X 36 X 8 An excellent choice for the prevention and treatment of pressure sores * The soft interconnected air cells allow for deep immersion providing constant low pressure across the entire seating surface * Adjustable air cells offer deep immersion to provide excellent pressure redistributino for tissue protection and treatment * Dual valve compartments address seating challenges such as pelvic obliquities sacral seating and enhances posture control * Both compartments can be adjusted indepedently to increase positioning and stability for side to side control * Nilon breathable cover with non skid bottom and safety straps * Easy to use hand held inflation pump * Flame resistant latex free neoprene * Patch kit included * Weight capacity: 500 lbs * Warranty: 5 year prorated *