Hercules Series 24/7 Big & Tall Executive Swivel Office Chair, 38-1/25" to 45-1/2" adjustable height, 500 lb. weight capacity, multi-shift, multi-functional, high back design, ventilated mesh ratchet back adjusts 3", 22-1/2"W x 5" thick padded fabric upholstered seat, adjustable lumbar support, double paddle control mechanism, tilt lock mechanism, tilt tension adjustment knob, height adjustable padded arms, CA117 fire retardant foam, heavy duty chrome base, dual wheel casters, black (assembly required) (in stock items usually ship within 24 hours)