Be different, this tractor task chair will add comfort and style to your desk. Contemporary Task Office Chair Available in Multiple Colors Comfort Molded “Tractor” Seat High Density Polymer Construction Swivel Seat Pneumatic Seat Height Adjustment 5.5in Height Range Adjustment Heavy Duty Chrome Base Dual Wheel Casters Designed for Residential Use Only Tested to meet ANSI/BIFMA Perfomance Standards – Manufacturer testing has been conducted on this product to meet specific performance requirements and safety standards set forth by the American National Standards Institute (ANSI) and the Business and Institutional Furniture Manufacturers.