Wakrays Home Office PA Base Mesh Covering Ergonomically Office Task Computer Chair Yellow One Touch Pneumatic Seat Height Adjustment. Heavy Duty Nylon Base with Dual Wheel Carpet Casters. Strong 5castor-wheel Chrome base lead 360 Degree Swivel. Maximum holding weight: 150kg Adjustable height: 33.5C45.5cm/13.1-17.7 inch