Executive mid-back chair is a fully upholstered with black fabric and 3" thick back cushion for comfortable seating while you work. Black frame offers stylish, fixed, nylon open-loop arms and a five-star nylon base with dual-wheel hard casters for easy mobility. Functions include pneumatic seat-height adjustment, 360-degree swivel, tilt, tilt tension and tilt lock. With the tilt functions, you can easily lean the chair back or lock out the tilt function when the chair is in the upright position. Weight capacity is 275 lb. Seat size is 20-1\/2" wide x 20" deep. Back dimensions are 20" wide x 25-1\/2" high.