• Breathable Mesh Back and Seat with Adjustable Lumbar Support • One Touch Pneumatic Seat Height Adjustment • Deluxe 2-to-1 Synchro Tilt Control with 3-Position Lock , Anti-Kickback, Seat Slider and Tilt Tension Control • Height-Adjustable Arms with PU Pads • Heavy Duty Angled Polished Aluminum Base with Oversized Dual Wheel Carpet Casters