The Montera column stool has a shell in rigid polyurethane obtained by molding and padding in expanded polyurethane. The stool allows 360° rotation and height adjustment, which is achieved by a gas spring operated by a chromed steel lever under the seat. The base, in chromed steel, is composed of a cross support plate, column, footrest, and circular plate. The cross plate, equipped with black nylon spacers, attaches the shell to the base. The footrest is a tubular member featuring a diamond‑pattern knurling.