Boss Office Products B9441 Executive High Back Ribbed Chair in Black Executive high back styling Beautifully upholstered in black CaressoftPlus Metal arms with padded armrests Adjustable tilt tension control; Pneumatic gas lift seat height adjustment Large 27" chrome base; Hooded double wheel casters Executive high back styling Beautifully upholstered in black CaressoftPlus. Metal arms with padded armrests Adjustable tilt tension control Pneumatic gas lift seat height adjustment