♻FOOD GRADE SAFETY MATERIAL – Mifelio reusable storage bags are made of FDA-grade biodegradable and eco-friendly PEVA material,PVC-free, Lead-free, Chloride-free and BPA-free.They are biodegradable as wellas recyclable. ♻ECO-FRIENDLY & DURABLE & EASY To CLEAN – Reusable storage bag help to reduce the usage of plastic bag.Each Mifelio Reusable sandwich bag has been thickened and saves up to hundreds disposable bags.Since the dishwasher will damage the zipper of the bags,Please clean with the bottle brush in nromal temperature water or cold water and put it on the top of a mug or cup to air dry. ♻Upgraded Double-lock – The Leak-proof Reusable Storage Bags upgrade double-lock closure provides best air tight seal,leak-proof, waterproof and hygienic,perfect for storing and preserving food.Thick Ziplock Bag help protect your food fresh in freezer. ♻MULTI-PURPOSE – 4pc10.7×15.7cm. Perfect container for Sandwiches,lunch meats,cold pasta salads,meal prep Fruit,vegetable,chips,snacks,Make up,jewelry,travel items,baby items,stationery,pet food and Great for picnics and camping. ?100% CUSTOMER SATISFACTION GUARANTEED – Choose Mifelio reusable storage bags to reduce the use plastic bags and do some postive effort for our environment. We provide 90 days refund or replacment warranty, If you are not 100% satisfied with our bags, feel free to contact us for solutions.