Adjustable footring makes this ERGOCRAFT Multi-Adjustment Office Stool ideal for multiple users. Seat height pneumatically adjusts. 2-1/2" thick padded back and 3" thick seat with waterfall edge provide all-day comfort. Extra adjustments include: seat and back angle. 27" dia. high-impact molded black plastic base. Lifetime guarantee on pneumatic cylinders. Meets or exceeds ANSI/BIFMA standards. Ships via small package carrier. 15-year guarantee. Made in USA.