This Multi-Function Budget Drafting Stool is upholstered in Black LeatherPlus (leather and polyurethane) for added softness and durability. It has a pneumatic gas lift seat height adjustment, allowing for versatile adjustment of the seat height to suit your comfort and work environment. It is attached with a 20 inch diameter chrome footring for added leg and foot support. The large 27 inch black nylon base provides added stability to the chair. The hooded double wheel casters make it easy to move and shift directions.