Professional Breathable Mesh Black Chair with Gunmetal Finish Accents. Breathable Mesh Seat and Back with Black Leather Trim Adjustable Lumbar Support. One Touch Pneumatic Seat Height Adjustment. Infinite Locking 2-to-1 synchro Knee Tilt Control with Adjustable Tilt Tension. Height Adjustable Arms with PU Pads. Gunmetal Finish Aluminum Base with Oversized Dual Wheel Carpet Casters.