Thick Padded Mesh Seat and AirGrid Back with Builtin Lumbar Support One Touch Pneumatic Seat Height Adjustment Dual Function Control Cantilever Arms with PU Pads Heavy Duty Angled Nylon Base with Oversized Dual Wheel Carpet CastersThick Padded Mesh Seat and AirGrid Back with Builtin Lumbar SupportOne Touch Pneumatic Seat Height AdjustmentDual Function ControlCantilever Arms with PU PadsHeavy Duty Angled Nylon Base with Oversized Dual Wheel Carpet Casters