VacMaster Long Roll, 2 Rolls per Box Deigned for Use with all VacMaster Foodsaver or Maxima Suction Vacuum Packing Machines Heavy Duty 3-1/2 Mil Thick Material Provides a Superior Bag for Optimum Freshness and Reliable Seal Keeps Food Fresh three to five Times Longer than Conventional Storage Bags Bags can be Frozen refrigerated Microwaved or Boiled Bags are Economically Priced and give you a Better Value