The sweatshirts and tees we use are GOTS certified. The global textile standard label (GOTS) is the most stringent certification. It tracks the entire chain of producation from farm to factory, including the export of items. It certifies that the cotton used to make the sweatshirts and tees are GMO-free and grown without use of chemicals, dye or banned toxic substances. It also ensures compliance with labour standards of International Labour Organisation throughout the production chain.