Soft Tough Economy Workbench ChairDetails Features normally only found on more expensive seating combine to make this chair adaptable to a variety of users at a more economical price. Pneumatic seat height control. Features include backrest height and depth adjust with ergo knobs and adjustable 18" foot ring. Durable 25" steel base with black nylon shell coating and nylon glides. Black microcellular, self skinning polyurethane foam seat and back. Some assembly is required. Dimensions