The No. 1 vacuum sealing system. Keeps food fresh up to 5x longer and helps prevent freezer burn. Save up to $2700 yearly (Based on buying in bulk, buying on sale & preventing waste). For best performance use with FoodSaver food preservation systems. Best performing vacuum storage bags (Among other brands tested, December 2016). FoodSaver vacuum seal bags have a unique, durable multi-layer construction that creates an air-tight barrier around foods proven to help prevent freezer burn. Specially designed channels allow for the removal of air. Trust Your Food Freshness to Foodsaver Bags & Rolls: Baked goods; breads; harvests; freeze; buy in bulk; portion control; make ahead meals; travel. Resists punctures and tearing. Locks in freshness and flavor. Safe for microwave, freezer, refrigerator and simmering.