Dry-Packs Mylar Bags 20 by 30-Inch 5 Gallon 4.5 Mil for Dried Dehydrated Food and Long Term Storage Strong and durable mylar bag, commonly used for food storage of dehydrated foods like grains, beans, seeds, etc Bag is heat or vacuum sealable for long term storage of product These bags reflect light, prodvide a moisture and oxygen barrier and they are puncture and tear resistant These are some of the industry best mylar bags available 4.5 mil thickness, a strong and durable bag