Flash Furniture Mid-Back Transparent Black Mesh Executive Swivel Chair with Synchro-Tilt and Height Adjustable Flip-Up Arms Contemporary Office Chair Mid-Back Design Transparent Black Mesh Seat and Back Adjustable Height Lumbar Support 2-to-1 Synchro Tilt Adjustment Tilt Tension Adjustment Knob Waterfall Seat promotes healthy blood flow Swivel Seat Pneumatic Seat Height Adjustment Padded Height Adjustable Flip-Up Arms