Revesun Black Ergonomically Office /Task/Computer Chair with Fabric Pads One Touch Pneumatic Seat Height Adjustment;Back cannot be tilted Heavy Duty Nylon Base with Dual Wheel Carpet Casters;Height adjustment Fabric material comes in your choice of 3 colors :Black/Pink/ Blue Strong 5 castor-wheel Chrome base lead 360 Degree Swivel. Ergonomically designed for comfort for those who work at desks for long periods.