Shell in plastic composition with up to 25% wood fibers. Tube base is made from Powder coated steel or chromed Steel. The wood fiber and plastic blend is injected into the mold, forming the chair's shell. The shell's inside is then upholstered with foam and fabric. The fabric is glued to the shell's surfaces and stapled using a pipe on the edges for a smooth and tight surface of the textile. Clean the shell with a moist cloth. If necessary use a little dish soap on the cloth. For the upholstered seat 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 aniline leather.