An extremely rugged and stable polyurethane utility stool on a traditional American-style base, this model has a durable seat and backrest built to withstand heavy use in rigorous work environments. 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. Seat is 17"w x 16"d x 2" thick. Backrest is 15"w x 12"h. Height adjusts from 21" to 28". Comes complete with a set of locking casters and a set of non-slip floor glides. Easy to clean, maintainence free. Black. Optional armrests available.