Executive Office Chair, High Back Design, Made of Eco-Friendly Materials, Tilt Tension Control Knob, Spring Tilt Control Mechanism, Pneumatic Seat Height Adjustment, Padded Nylon Arms, Heavy Duty Nylon Base, Dual Wheel Casters, Black LeatherSoft Upholstery, LeatherSoft is leather and polyurethane for added Softness and Durability, CA117 Fire Retardant Foam