SPACE Seating AirGrid Dark Back and Seat, Multi Function 4-Lever Control, Flip Arms, Pneumatic Seat Height Adjustment and Angled Nylon Finish Base Managers Chair Breathable Air grid Seat and Back with built-in lumbar support Pneumatic Seat Height adjustment Multi Function Control with Seat Slider and Adjustable Tilt Tension. Weight capacity: 250 pounds Seat size: 20 inches wide x 20 inches deep, Back size: 19 inches wide x 19.5 inches high