Mid-Back Task Chair features a tight, breathable mesh on the back for reliable support. Cushioned seat is upholstered in matching fabric for a continuous look. Padded arms adjust in height. Functions include adjustable seat height from 18-1/2″ to 22″ , 360-degree swivel, tilt tension adjustment and tilt/tilt lock. The 12-3/5″ diameter, five-star nylon base is equipped with dual-wheel casters for easy movement. Seat measures 50-1/2″ wide x 17-1/2″ deep. Back size is 18-1/2″ wide x 17-5/7″ high. Weight capacity is 275 lb.