Shell in plastic composition with up to 25% wood fibers. The Fiber Chair family is partly made from a natural material - variations in color can occur. Clean with a moist cloth. If necessary use a little dish soap on the cloth. For upholstery versions, please find cleaning instructions for your chosen textile at kvadrat.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 anilinee leather.