Clothing is the second biggest polluter after consumer waste worldwide ending up in landfills. In a Fashionably Green article, Doiny Lalieu noted The largest pollutants are microfibres: super fine synthetic yarn used to manufacture nylon, polyester and spandex. Every time we fill our washing machines with this stuff, as many as 4500 tiny fibre strands per gram of clothing are released, entering the waste-water system and ultimately our rivers and seas.