Brandt Industries Armless Vinyl Medical Stool with Backrest, Navy (17422 Navy)

Silent pneumatic suspension. Mounted on a 23" diameter cast aluminum 5 point base. 14" diameter round seat. 2" twin wheel polyurethane casters. Height adjustable from 17" to 22". 14.5"W x 9.5"H backrest that adjusts vertically, and will tilt to conform to the users body.