Breathable AirGrid Back and Black Mesh Seat Adjustable Lumbar Support One Touch Pneumatic Seat Height Adjustment Big and Tall Chair holds up to 400 lbs.2 Way Adjustable Arms with Soft PU Pads Gunmetal Finish Aluminum Base with Dual Wheel Carpet CastersBreathable AirGrid Back and Black Mesh Seat Adjustable Lumbar SupportOne Touch Pneumatic Seat Height AdjustmentBig and Tall Chair holds up to 400 lbs.2 Way Adjustable Arms with Soft PU PadsGunmetal Finish Aluminum Base with Dual Wheel Carpet Casters