Engel is a pioneer in the production of natural textiles. The company started in a small way but now offers a wide range of underwear. Since 1982 their textiles have been manufactured from natural certified organic cotton and merino wool from certified organic animal farming. The materials are IVN Best (International Association of Natural Textile Industry) or Global Organic Textile Standard (GOTS) certified. All materials are nickel free and all clothing is made in Germany.