Plastic frame: black;Fabrics: high quality imported mesh;Baked black painted inner tube, PU handrail;Chassis: self-developed baking black paint aluminum alloy wire control;Back support frame with baked black paint;Waist: TPR+ nylon;Pneumatic bar: baked black paint, KGS brand, level 3 100mm travel;Chair legs: black plastic;Pulley: 65mmPU. (mobile comfort pad optional)