This innovative task chair provides exceptional support to the hard-working professionals in your office.Transparent mesh across the back allows air to circulate, keeping you cool no matter how high the pressure gets and built-in lumbar support helps prevent back strain and muscle fatigue. Padded flip-up arms take pressure off your shoulders and neck, and flip up and out of the way, as needed. The swivel seat is padded with 3 inches of CA117 fire retardant foam. Its waterfall edge is designed to relieve pressure and promote healthy blood flow to the legs. Raise or lower the seat using the pneumatic seat height adjustment lever, conveniently located under the seat. Turn the tilt tension adjustment knob to increase or decrease the amount of force needed to rock or recline and lock the seat in place with the tilt lock mechanism. The heavy-duty, nylon base with dual wheel casters makes it easy to roll across the floor.