Ergonomic Swivel Task Chair, 37-1/2" to 43" adjustable height, 250 lb. weight capacity, multi-functional, mid-back design, waterfall seat, polyester upholstery, built-in lumbar support, triple paddle control mechanism, infinite-locking back angle adjustment, 1-3/4" adjustable height back, multi-tilt lock mechanism, height adjustable padded arms, CA117 fire retardant foam, heavy duty black nylon base, dual wheel casters, black (assembly required) (in stock items usually ship within 24 hours)