Boss Office Products B7906 Caressoft Executive Mid Back Chair in Black Beautifully upholstered with ultra soft and durable Caressoft upholstery Executive Mid Back styling with extra lumbar support Padded armrests covered with Caressoft upholstery; Adjustable tilt tension control Large 27" nylon base for greater stability; Hooded double wheel casters Upright locking position; Pneumatic gas lift seat height adjustment Weight capacity is 250 lbs. Ships ready to assemble