Costume Modular Sofa redefines the lounge category setting a new standard in eco-sustainability. Stefan Diez and Magis set out together to develop a sofa system that could be completely dismantled, with as little polyurethane foam as possible and a textile cover that could be washed or replaced. Costume is the result. Its body comprises recycled and recyclable polyethylene produced using rotational molding technology from furniture and car industry waste. An insert made of pocket spring cores provides the cushioning for the seat and backrest. On top of this is a thin layer of polyurethane foam. The whole is held together by a cover made of fabric that can be fastened using tension belts and easily removed at any time. Not only does this system use much less foam in manufacturing than conventional sofas – most of the materials used are also easily recyclable.