500 lb. Weight Capacity. Durable blow-molded plastic bench and backrest. 1″ Aluminum frame is lightweight, sturdy and corrosion resistant. Height adjusts in 1/2″ increments with unique ″Dual Column″ extension legs. Armrest is reversible to accommodate any bathroom. 3 Position Back depth is adjustable from 18″ - 19″ in 1/2″ increments. Extra large locking suction cups provide added safety. Limited Lifetime Warranty.