FoodSaver Clear Heat Seal Rolls With Precut Bags Man made materials Includes: 1 ea - 8 inch x 20 ft, Heat-seal Roll, 4 ea - 11 inch x 16 ft Heat-seal Roll, and 36 ea - 1- quart Heat-seal Pre-cut Bags. Works with all foodsaver heat sealing systems Unique multilayer construction that creates an airtight barrier around foods Rolls are continuous to make any length bag you need