Breathable Air Grid Back with Builtin Lumbar Support Thick Padded Black Bonded Leather Seat Pneumatic Seat Height Adjustment 2to1 Synchro Tilt Control with Adjustable Tilt Tension 4Way Adjustable Flip Arms with 3Position Lock and PU Pads Heavy Duty Angled Chrome Finish Base with Oversized Dual Wheel Carpet CastersBreathable Air Grid Back with Builtin Lumbar SupportThick Padded Black Bonded Leather SeatPneumatic Seat Height Adjustment2to1 Synchro Tilt Control with Adjustable Tilt Tension4Way Adjustable Flip Arms with 3Position Lock and PU PadsHeavy Duty Angled Chrome Finish Base with Oversized Dual Wheel Carpet Casters