Precision Desk Height Swivel Stool Manufacturers three-year warranty ANSI/BIFMA Pneumatic seat height adjustment, 360 swivel, manual back height adjustment, seat depth adjustment. Injected, molded five-star base with dual-hooded casters. 30% Polyester/70% Olefin upholstery. Seat: 17-3/4w x 16d. Back: 16-1/4w x 14h. Seat height 17" to 22". Shpg. wt. 26 lbs. Assembly required. Casters supplied with this chair are not suitable for all floor types. Alternative casters are available to meet your specific needs. Dark Gray WEIGHT: 26 lbs. SOLD AS: Each STOCK NUMBER: 3380DG