Reusable Snack Bags Keep your snacks and sandwiches fresh and portable with reusable snack bags. Use in place of zipper lock or other fold over bags that get tossed in the trash and clutter the landfills. Made with: 100% Cotton with PUL lining. Wipe clean and dry between uses. Wash in cool water with gentle detergent. Hang to dry, or tumble dry low. ECO-PUL is food safe, water resistant, durable, non migrating polyurethane laminate that does not contain BPA's, phthalates, lead or other toxic substances. (This is the same fabric used in cloth diaper covers).