Aluminum frame Suction-up tips on legs provide extra stability and safe. Detachable backrest. 1)aluminum frame, 1.40mm pipe thickness 3) Seat width:50 4) Seat height:42-52 5) Weighing capacity: 250 lbs 6) N.W / G.W:3kg /( 14kg/4pcs) 7) Carton dimension: 66*40*38 CONTAINER QTY: 20": 1080pcs 40" 2240pcs 40"HQ:2600pcs