Protekt O2 Wheelchair Cushion 18 x16 x4 with Pump Cushions Air BMI (easy scroll method) * The smooth finish lets BMI (easy scroll method) * Hold Release Zero KG LB Clear Enter functions * Auto Zero 5 minute auto off (AC mode disabled) low battery indicator * Wheels and handle for maximum portability * Updatable firmware * RS232 Output Port * 6 C cell batteries (not included) or 120V AC adapter (included) * Metallic Gray * Weight capacity: 600 lb 272kg * 1 Year Warranty * Specifications Capacity: 600 lb 272 kg Resolution: 0 Slide tube powder coated silver vein steel frame 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 *