Work Smart Series Executive Big Man's Chair with Black Eco Leather Seat and Back Features: Thick Padded Contour Back with Built-in Lumbar Support / Black Eco Leather (-EC3) / One Touch Pneumatic Seat Height Adjustment / Locking Tilt Control with Adjustable Tilt Tension / Heavy Duty Chrome Base with Dual Wheel Carpet Casters / Weight limit up to 350 lbs.