FOOD GRADE MATERIAL & ECO-FRIENDLY : These reusable storage bags are made of FDA grade PEVA material, totally safe for storing all kinds of food, PVC-free, chloride-free, lead-free and BPA FREE. It is not harmful to the environment when disposed of or burned. Absolutely safe & healthy for families and the planet. LEAK-PROOF & STAND-UP DESIGN : The stand up reusable food storage bags feature an upgraded ziplock closures sealing technology that is more sealed, leak-proof, waterproof and hygienic, perfect for storing and preserving food. The stand-up design extends its inner room of reusable lunch bags, you can store more food and never worry that the zipper would be ripped. FREEZER SAFE & EASY TO CLEAN: The reusable freezer bags can lock out freezer burn while keeping food fresh and full of taste, perfect for freezing meat, chicken, fish, fruits, and vegetables. It is easy to clean with the bottle brush and put the bags on the top of a mug or cup to air dry. Note: We recommend HAND-WASH, it is NOT safe in the dishwasher, microwave or oven. MULTIPLE MULTI PURPOSE: Reusable food storage bags kit consist of 5 reusable gallon bags. These bags not only greatly store marinating meats, vegetables, fruit, meal prep, frozen foods, cereal, cookies and babies food, but also office supplies, cosmetics, jewelry make-up, stationery, travel accessories and more.