FoodSaver Rolls have all the same great features as the FoodSaver Bags, but they come ready to cut into custom lengths to fit your vacuum packaging needs. Simply unroll and cut to the length desired and seal one end with your FoodSaver. Then, fill your custom-size bag and vacuum package. The FoodSaver Rolls are made of the same patented heavy-duty, FDA-approved material used for the FoodSaver Bags and can be microwaved, boiled and frozen. They are dishwasher-safe and can be reused and resealed with your FoodSaver Vacuum Packaging Appliance. The 3-ply material has an outer layer of nylon for strength and provides a moisture and oxygen barrier that protects your delicious food from freezer burn.