Black leather upholstery with black metal frame and urethane arms. Pneumatic seat height adjustment and 360º swivel, tilt, tilt tension and tilt lock. Loop arms. Five-star base. Seat: 20-1/2w x 18-3/4d. Back: 21w x 23-3/4h. Overall height: 37-7/8" to 41-5/8". Meets or exceeds ANSI/BIFMA standards. basyx™ five-year limited warranty. Shpg. wt. 39 lbs. Assembly required. Casters supplied with the chairs are not suitable for all floor types. Alternative casters are available to meet your specific needs.