The iron frame is 1.5 mm thick. Material: PVC leather, nylon feet, normal sponge for the back, plus shaping sponge for the seat Armrest with 2D lift Back lever/angle adjuster: 166 adjuster Level 3 gas rod Chassis: 19# N.W. mechanism: 18.5 kg–20.5 kg Size of carton: 82*65*33 cm Dimensions of the cushion: 40 cm by 55 cm with an integrated LED light