1. Reusable silicone bags of 500 ml to store family portions.Pack of 4 2. BAGS are made of SAFE ECO FRIENDLY & CERTIFIED FOOD GRADE SILICONE which contains NO PVC, NO Phosphates, NO Petroleum, is Plastic Free & Latex Free. Hermetically sealed closure preserves & extends the freshness of your food for healthy nutrition, money saving & less food waste. 3.Pack your food into AIRTIGHT SILICONE FOOD STORAGE BAGS directly from the grocery store, refrigerate or freeze, marinade before cooking, microwave or boil, reheat, even eat out of & finally save your leftovers for lunch at work. 4.These REUSABLE FREEZER BAGS are thick, washable & dishwasher safe. Reuse them over & over again. 5.With good preservation effect suitable for storing food ,vegetables, meat, even milk, sauce and other liquids. 6 Made of of food grade silicone,healthy, eco-friendly,non allergic, non reactive, hygienic,repels germs and chemicals, non toxic, recyclable. 7.Multi functional-Not only for your kitchen but also outdoor to keep your thing together Airtight Seal and Leak proof- Keep your food and drink antioxidant. 8.Withstands Extreme Temperatures Heat and Cold Our heat and cold resistant bags are safe to be put in Microwave, Dishwasher, Freezer, Fridge