(10) 5 Gallon Mylar Bags 20"x30" 7.0 MILS THICK 10 count 20" x 30" (5 Gallon) 7.0 mil Thick Mylar Bag Light, Moisture, Oxygen Barrier, and Puncture Resistant - use 2000-2500cc oxygen absorber capacity Ideal for long-term food storage of dehydrated grains and foods - Heat seal for long-term storage Additional Info: These bags are also known as Mylar-Foil Bags and have a wide variety of uses in industries that require moisture and oxygen barriers to ensure product integrity. Polyester Film, ('Mylar') when laminated to aluminum foil provides additional effective barrier properties and makes for a higher punctures resistant material than any other metalized polyester structure. These are the BEST 5 Gallon Mylar Bags to use