Returnity is the world’s first environmentally friendly and recyclable flame retardant from Trevira CS, and is a further development of this high-quality fiber. Together with the German environmental research institute EPEA, Returnity has been developed as a cradle-to-cradle-environmentally friendly chemical optimization process that covers the entire production process of furniture and decorative materials. In the production of yarns, yarn dyeing, the weaving process and end products, chemically unsafe substances have been removed and replaced by environmentally harmless substances. This allows the flame-retardant fiber Trevira CS to circulate without residue in a technical recycling circuit. Materials can be withdrawn after use and can start a new life as a new product.