VacMaster 944300 Variety Pack of Vacuum Packaging Storage Bags. 60 Count includes 20 of each. 1 pint 1 quart and 1 gallon durable vacuum storage bags. For use with all vacuum packaging systems. 3 and a half mil thick material. 3rd layer of perforated material creates channel for air to escape to enhance suction. Keeps food fresh up to 5 times longer than normal preservation methods. Can be frozen refrigerated microwaved or boiled. Made in the USA.