Lorell High-Performance Ergonomic Multifunction Chair, Black

Contoured seat and back with built-in lumbar support! Lumbar feature supports your lower back and enhances the natural curve of your spine. 1-touch seat-height adjustment, seat-glide mechanism, 360 deg. swivel, tilt, tilt tension and tilt lock. With the seat-glide mechanism, seat cushion travels forward and back, and then locks into position. 5-star base rolls easily on five 2in dual-wheel casters. Weight capacity tested to support up to 250 lb. Tested to meet ANSI/BIFMA Performance 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.