Commercial 2000 Big and Tall Executive Chair with Dynamic Lumbar Support, Up to 400 lbs., Black Seat/Back, Silver Base. Dynamic Lumbar Support, DLS, promotes and maintains ideal spine curvature. The lumbar self adjusts to different posture states as you recline. Premium La-Z-Boy® Commercial ComfortCore® with gel memory foam seat construction for added comfort. Upholstered in commercial grade black bonded leather. Aluminum arms with PU arm pads. Five-star aluminum base with casters for easy mobility. Cable actuated seat plate for seat height adjustment and tilt function. Supports up to 400 lbs. Recommended Applications: Executive & Management; Seat Color: Black; Back Color: Black; Color Family: Black.