Task chair offers a self-adjusting, DuraGrid Back Seating for increased comfort. Self-adjusting mechanism adjusts tilt tension by using your body weight as a counterbalance resulting in perfect balance as you recline. Mechanism also features anti-kickback and backrest lock. Functions include pneumatic seat-height adjustment, seat-glide mechanism, dual-action synchro tilt and asynchronous control. Weight capacity is 300 lb. Chair also offers adjustable arms and a heavy-duty base with black endcaps and dual-wheel carpet casters.