Hard to tell what it's made of from the tiny image, but the cotton bags I know are 100% cotton (except for the print), like this: https://www.sinplastico.com/37

Hard to tell what it's made of from the tiny image, but the cotton bags I know are 100% cotton (except for the print), like this: https://www.sinplastico.com/3742-large_default/organic-cotton-reusable-shopping-tote-bag-be-part-of-the-change.jpg https://www.sinplastico.com/3742-large_default/organic-cotto... while canvas bags are usually made from cotton + PVC.