Startseite » Sustainability » Sustainable Materials Sustainable Materials. ACTING SUSTAINABLY MEANS SELECTING MATERIALS THAT REDUCE ENVIRONMENTAL IMPACT THROUGHOUT THE SUPPLY CHAIN. The use of natural materials is part of the brand core of MARC O’POLO. MARC O’POLO Modern Organic Products Our organic products consist of fibers sourced from certified ecological farming. Rules for the cultivation and harvesting of natural fibers include the following: Use of crop rotation Biological methods of pest control No use of synthetic fertilizers No use of genetically modified seed No use of defoliants during harvesting For its Modern Organic Products, MARC O’POLO sources yarn from suppliers who have been certified in accordance with the Global Organic Textile Standard (GOTS) or the Organic Content Standard (OCS). Recycled material The use of recycled fibers saves natural resources and reduces the use of chemical substances, which is why MARC O’POLO increasingly uses recycled cotton-polyester and wool fibers. For the MARC O’POLO and MARC O’POLO JUNIOR outdoor collections, we use polyester padding made with recycled PET bottles. The products can be identified by the hangtag: THERMORE® ECODOWN® made of 100 % recycled material THERMORE® CLASSIC made of 50 % recycled material THERMOSOFT® made of 50 % recycled material Read more in our Sustainability Report.