The ergonomic curved form is perfectly adapted to the shape of the body. The combined modern and structural design enhances the stability of the chair. Each of these contemporary components that accent the chair is made from durable matte-finish moulded plastic with a curved seat. The bottom base of the metal legs have plastic tips to protect sensitive flooring. High Quality Heavy-duty plastic molded seat Built in lumbar support to maintain proper sitting posture Ergonomically shaped and comfortable curved seating Great for Home, Office, Reception areas, Parties, Banquets, Bars and Café’s. Modern design: simple and stylish, easy to clean Plastic stoppers in the bottom protect floor and keep the chair from sliding Easy to assemble certification: ISTA-3A, BIFMA-5.1, TB117 TygerClaw 16.88-in x 32.2-in Black Plastic Office Chair