The folding grocery shopping bags are made of 100% polyester cloth which is ideal fabric for grocery bags.Grocery bags are reinforced with bias tape which makes them hold heavy loads safely. It is lightweight but very sturdy and resistant to water.You can reuse those cloth shopping bags and reduce your carbon footprint and plastic usage by owning shopping bags bulk. Perfect as favors gifts for women and wen! And can add some fun to your shopping grocery by using large reusable shopping bags like these. These foldable bags can be easily folded into the attached pocket-size pouch, so you can carry reusable grocery bags in your pocket or car without taking up much space.