Shell in plastic composition with up to 25% wood fibers. Upholstered with textile or leather. Wood base is made from solid water-lacquered, Oak wood. For Stained Dark Brown version only: Please note that slight color variations can occur due to the inherent characteristics of the material. For textile upholstery versions, please find cleaning instructions for your chosen textile at kvart.dk. For leather upholstery versions, clean the leather with a dry cloth regularly. Treat the leather at least four times a year using only special leather treatment products for aniline leather.