Fully upholstered swivel chair. Polished aluminum trim. Gas pneumatic lift. Adjustable height. Approved for GSA. Base: Swivel/tilt mechanism with 2 degrees forward pitch and gas pneumatic lift mounted on 27" 5-star cast aluminum base. Black dual wheel casters for use on carpet and hard surfaces. Seat and Back: Upholstered polyurethane foam with polished aluminum trim. Certain two-way patterns or striped fabrics are not suitable for application on this product. Solids, textures and leathers are recommended.