Impacterra Josephina Office Chair, Black Features adjustable tilt tension control and lift adjustable seat height Upholstery color: PU (polyurethane) Black Frame finish: chrome/aluminum Product Dimensions: height min. 38.25-inch, height max. 41-inch by width 26-inch by depth 26-inch Other Dimensions: seat height 21.75-inch, seat cushion depth 18.5-inch, base diameter 26-inch