Increased patient comfort comes from the generous, high-density polyethylene seat and back (20"W x 12"D) and angled legs that distribute weight over a larger area. Suction-cup tips on all four legs provide even more stability and safety. Durable aluminum frame is corrosion resistant and features seat height adjustments in 1-inch increments. Limited lifetime warranty on frame. Six month warranty on handles, feet, suction cups, push buttons, and any "wearable" parts. With Back. Assembled.