An extremely rugged and stable polyurethane utility stool on a traditional American-style base, the Alvin Utility Stool has a durable seat and backrest built to withstand heavy use in rigorous work environments. It is ideal for extended sitting periods. Will resist punctures, water and most chemicals. Features include pneumatic height control, a height- and depth-adjustable hinged backrest and a 23" diameter black powder-coated tubular steel base with built-in foot ring. The seat is 17" w x 16" d x 2" thick. Backrest is 15" w x 12" h. Height adjusts from 21" to 28". It comes complete with a set of locking casters and a set of non-slip floor glides. It is easy to clean and maintenance-free.