PRODUCT INFORMATION’s 7 MIL thick mylar barrier bags are the wise choice for long-term storage. Don't take chances on the protection of your valuable food items by using low-grade, spray-on metal imitation bags.Our thick 7 MIL film with a true inner aluminum metal layer provides the highest level of protection needed for long term storage and reduces the risk of accidental puncture due to abrasion. The bottom of the bag is gusseted to allow the bag to stand on a shelf like a can or jar.Heat seal with a flat iron/hair straightener / clothes iron or simply use the secure ziplock as a temporary seal for short term storage needs. Heat sealing ensures the best long term protection.Bag film is approved for food use and safe for adding boiling water directly to bagUSESPerfect for storing dehydrated and freeze dried foods or repacking foods from bulk.Perfect for storing your own on the go meals / or do your own backpacking meals.Use to protect important documents, collections, and artifacts.Use for storing / transporting soil samples for agricultural, scientific, and geotechnical investigationsAt , we value the importance of food preservation and long-term food storage. We understand the importance of using high quality bags and oxygen absorbers for long-term food preservation. Our bags are manufactured to quality specifications and are made only of non-BPA materials approved for food contact. Have full confidence that our bags and O2 absorbers are among the best on the .