These Clean Room Basic industrial polyurethane chairs adjust to fit most body types and workstations. Optional 2-way adjustable arm rests support a variety of arm placements for proper ergonomics. These polyurethane chairs are easily cleaned, making them ideal for almost any environment. Choose from chrome hooded rolling, non-marring casters (suitable for both hard and carpeted floors) non-marring bell glides (suitable for both hard and carpeted floors) on a polished cast aluminum base.