2-to-1 synchro Tilt Managers Chair with Adjustable PU Padded Arms. Thick Padded Contour Seat and Back with Built-in Lumbar Support. One Touch Pneumatic Seat Height Adjustment. 2-to-1 synchro Tilt Control with Adjustable Tilt Tension. Height and Width Adjustable Arms with PU Pads. Heavy Duty Nylon Base with Dual Wheel Carpet Casters.