Breathable mesh back with thickly padded black leather seat featuring side mesh panels. Height adjustable polyurethane arms. Synchronized knee tilt with tilt tension and tilt lock. Adjustable lumbar support. Pneumatic seat height adjustment, 360° swivel. Five-star nylon base with carpet casters. Seat: 22w x 19-3/4d. Back: 22-7/8w x 28h. Overall height 42-1/8" to 46-1/2". basyx™ five-year limited warranty. Shpg. wt. 45 lbs. Assembly required. Alternative casters are available to meet your specific needs. Casters supplied with this chair are not suitable for all floor types.