Impact-resistant composite seat with an aluminum frame that is lightweight, durable and corrosion proof;Crack proof and tarnish resistant legs are height adjustable in 1 increments;New pinch-free cover allows for push pins to be depressed without pinching fingers; an audible click will be heard when secure;Support collar prevents leg movement and reduces rattle;Seat Dimensions: 13(D) x 13(W) x 13.5-21(H); Outside Legs: 12.5(D) x 12.5(W); Weight Capacity: 300 lbs