Office Star High Back Breathable ProGrid Back and Seat Adjustable Black Managers Chair, Gunmetal Finish Thick padded Seat & Back with mesh fabric One touch pneumatic Seat Height adjustment Mid pivot knee tilt with adjustable tilt Tension Control Height and Wedge adjustable arms with PU pads Seat Size: 20 inches wide x 18.5 inches deep, Back Size: 23.25 inches high x 21.25 inches wide