Mid-Back Black Mesh Computer Chair is definitely your top choice when it comes to price and quality. The breathable mesh back is ergonomically curved, which allows air to pass through, adding to long term comfort by preventing body heat and moisture to build-up. Its padded seat provides comfort for long periods of use. The chair has pneumatic gas lift height adjustment, hooded double wheel casters, and a sturdy nylon base. It comes with T arms, adjustable arms, or also without arms.