Ergonomic Mid-Back Office Chair, Navy Blue Fabric Upholstery, Pillow Top Cushioned Seat and Back, Height Adjustable Back, Back Height Adjustment Knob, Asynchronous Seat and Back Angle Adjustment, Infinite Locking Seat and Back Angle Adjustment, Seat Angle Adjustment, Tilt Tension Control Knob, Pneumatic Seat Height Adjustment, Height Adjustable T-Arms, Heavy Duty Nylon Base, Dual Wheel Casters, CA117 Fire Retardant Foam