Our bags are made from Supernatural Paper™. Supernatural Paper™ is made from trees - tree cellulose, that is - and bonded to make it durable and washable, giving it supernatural qualities. Because trees are a renewable resource and our cellulose is derived from responsibly managed forests, our bags are more sustainable with a lower carbon footprint than traditional materials like leather, cotton, or other petroleum-based materials. Our commitment to making our materials supernatural doesn't end there as a growing number of our products are also FSC®-certified