High-density polyethylene seat (20"W x 10"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 with 5 adjustments in 1-inch increments from 14 1 2" to 19 1 2". 250-lb. weight capacity. Angled legs distribute weight over a larger area for added stability. The overall dimension with back installed is 19.5"(L) x 15"(W) x 29"(H). The overall dimension without back is 19.5"(L) x 17"(W) x 15"(H). Base dimension is 16"(D) x 15"(W). Weight: 6.2 Pounds