Flash Furniture High Back Black Leather Executive Swivel Chair with Lumbar Support Knob with Arms Contemporary Office Chair High Back Design with Headrest Pressurized Lumbar Support Knob Tilt Lock Mechanism Tilt Tension Adjustment Knob Swivel Seat Pneumatic Seat Height Adjustment Padded Loop Arms Heavy Duty Titanium Nylon Base with Black End Caps Dual Wheel Casters