Executive mid-back chair offers a breathable mesh back; height-adjustable, fabric-upholstered cushioned seat; and customized positions to enhance your comfort. Asynchronous control includes three levers to modify the angle of back relative to seat, tilt (free float or infinite locking within a fixed range) and forward tilt. Seat-glide mechanism allows the seat cushion to travel forward and back and then lock into position. 20" wide seat adjusts in height from 19-1/4" to 23" and in width from 17-1/2" to 19-3/4". Arms with soft polyurethane pads adjust in height from 7-1/2" to 10-1/4" and width from 17-1/2" to 19-1/2". Other functions include 360-degree swivel, tilt, tilt tension and tilt lock. Black, five-star nylon base (26-8/10" in diameter) is equipped with smooth-rolling, 2.16" dual-wheel hooded casters for easy mobility. Back measures 19" wide x 17" high. Weight capacity is 250 lb. Mid-back chair meets or exceeds BIFMA standards.