Mesh material; Foam density (back:12, seat:24); 300mm Nylon base(850kgs weight bearing); Nylon castor; 120mm black gas lift. One lever, T2.0mm seat plate. PP arms Sizes: OVERALL SIZE(cm): 60 W×54cmD×88.5 H –100H BACK CUSHION SIZE(cm):44W×44.5H×3T SEAT CUSHION SIZE(cm): 47.5W×43D×6 T