The Alpha Office Chair offers all the support and features needed for a 24/7 multi-shift office environment with a sleek, modern design. The back features a ventilated black mesh material while the 5" thick seat is upholstered in black fabric. It supports up to 500 lbs., has a 3" adjustable ratcheting back, tilt lock and tension controls, plus dual wheel casters and adjustable height padded arms. This modern office chair is all your workplace or home office needs for all-day comfort. Other features include a chromed metal base, CA117 fire retardant foam and a double paddle control mechanism.