This mesh drafting stool comes with an open breathable mesh fabric that will keep you cool and comfortable during extended periods of work. The seat is supported with a solid metal back frame with ballistic nylon wrap providing a stable and comfortable back rest. The pneumatic adjustable gas lift allows for easy seat height adjustment to help you find the personalized sitting style that suits you and your work environment. The 20-inch chrome footring provides added foot and leg support. The 25-inch nylon base provides added stability to the chair by spreading the load over a larger surface area. The hooded double wheel casters make it easy to move and shift directions. Boss Office Product chairs have a 6-year limited manufacturer warranty.