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 and then lock it into position. Asynchronous control features three levers to modify the angle of the back relative to the seat; tilt; and forward tilt. Other functions include pneumatic seat-height adjustment, 360-degree swivel, dual-action synchro tilt and 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.Conforming comfort for your back with breathable mesh and adjustable lumbar5 positions for back with tilt lockSeat adjusts in depth and heightAdjustable-height arms with soft paddingCovered by Lorell Limited 5-Year Warranty