This Commercial-Grade Mesh-Back Task Chair has an attractive linear mesh material back which helps to prevent heat buildup. The back design is constructed to allow for generous lumbar support. This chair features a thick, high-density foam seat that is upholstered with premium mesh material for contract styling and quality. It includes a pneumatic gas lift seat height adjustment, a 25" black nylon base and hooded double wheel casters. It is tested to a weight capacity of 275 lb. This chair is perfect for use at home, school or the office.