Mid-back chair offers breathable mesh on the back for conforming comfort as well as built-in lumbar support that easily adjusts for ergonomic positioning. Arms with soft polyurethane pads adjust in height. Tilt lock freezes back in five positions. Seat slider adjusts the seat-depth adjustment so you can move it forward or back & then lock it into position. Asynchronous control features three levers to modify the angle of the back relative to the seat; tilt; & forward tilt. Other functions include pneumatic seat-height adjustment, 360-degree swivel, dual-action synchro tilt & tilt lock. The thickly cushioned seat is fabric-upholstered. Five-star base is equipped with five casters for easy chair movement. Weight capacity is 275 lb.