These patented heavy-duty bags can be microwaved, boiled and frozen. They are dishwasher-safe and can be reused and resealed with your FoodSaver Vacuum Packaging Appliance. Made of a unique 5-ply FDA-approved material with an outer layer of nylon for strength, FoodSaver Bags provide a moisture and oxygen barrier that protects your delicious food from freezer burn. FoodSaver Bags - Quart size 8" X 11 1/2". Qty: 48