Our Food Storage Bags are reusable and have No BPA, No PVC, No Latex. Keep your food safe from contaminants. Use in pantry, refrigerator, or freezer.The Pinch-Lock Seal is a new feature that assures an airtight seal.The airtight food storage containers will keep food fresh, preserve nutrients, and lock in flavors. Reusable Food Storage Bags are great for snacks, sandwiches, meal prep, sous vide, and pre-made baby food or soup. Our bags are great for snacks and smoothie mixes to grab and go. You can even prepare a meal ahead of time to heat up and serve. There is a weekly dial on the front to mark when you put food into the bag or use a dry erase marker. Freezer Safe, Dishwasher Safe, Microwave safe, Oven safe, Boil Safe.