The Tippy Mod Operator chair with chrome base features an upright posture to allow for comfort while working. High density, top-quality molded foam seat allows for equal weight distribution. The BIFMA Class 3 gaslift feature which allows for seat height adjustment is long lasting, strong and able to support lighter loads with a weight of up to. Nylon castors for smooth movement of the chair make it ideal for study, office and home use. Assembly is required, the chair comes with an instruction manual. Features: Swivel & tilt Gas height adjustment Black nylon