Deluxe Vinyl Back Task Chair with Vinyl Seat. Thick Padded Contour Seat and Vinyl Back with AirGrid® Backing for Added Support and with Built-in Lumbar Support. One Touch Pneumatic Seat Height Adjustment. 2-to-1 synchro Tilt Control with Adjustable Tilt Tension. Height Adjustable Angles Arms with Soft PU Pads. Heavy Duty Angled Nylon Base with Oversized Dual Wheel Carpet Casters.