The Circulation Stool combines style and comfort in an unique, modern package. GREENGUARD Indoor Air Quality Certified® and GREENGUARD Children & Schools Certified. The sleek design features a perforated pattern for excellent ventilation. Black or graypolypropylene seat and back, contoured for natural support and comfort. Seat features a 16ºslope for a natural seating position Pneumatically adjustable from 20 1/2" to 28 1/2" high. Foot rest is provided for comfort. Stool rolls easily on a 5-star base with 2" casters. Optional arms made from 7/8" tubular silver steel are available separately. TAA compliant.