Vieworld Palermo PU Leather Computer Office Chair - Black Thickly padded seat and arms for extra comfort. Black Size (inch): 21.3*22*33.9/39.6 PU Leather chair with 270mm nylon base Heavy Duty Nylon Base with Dual Wheel Pneumatic seat-height adjustment for easy positioning,one Touch Pneumatic Seat Height Adjustment ,heavy Duty Nylon Base with Dual Wheel Carpet Casters.