Model number:G210 Size:Standard Chair Cover Material:PU Leather Arm Type : Fixed T type Arms Mechanism Type :Multi-functional Tilt Gas Lift: 80mm Base :R350mm Nylon Base Casters : 60mm Racing Caster/PU Frame:Metal Foam Type:High Density New Foam Adjustable Back Angle :155° Adjustable Lumbar Cushion :Yes Adjustable Headrest :Yes