• Breathable AirGrid® Back with Built-in Lumbar Support • Thick Padded Black Mesh Seat • Pneumatic Seat Height Adjustment • 2-to-1 Synchro Tilt Control with Adjustable Tilt Tension • Height Adjustable Angled Arms with PU Pads • Heavy Duty Angled Nylon Base with Oversized Dual Wheel Carpet Casters • GREENGUARD Indoor Air Quality Certified®