Contemporary Multi-Functional Mesh Office Chair, Mid-Back Design, Gray Fabric Upholstered Seat is Stain Resistant, 3'' Thick Foam Padded Seat, Breathable Black Mesh Back, Ergonomically Contoured Back, Built-In Lumbar Support, Back Height and Pitch Adjustment, Seat Tilt Lock Control, Height Adjustable Arms, Pneumatic Seat Height Adjustment, Heavy Duty Nylon Base, Dual Wheel Casters, CA117 Fire Retardant Foam