Vacuum Sealer Flat bags for use in vacuum machines for commercial applications. Certified for resale applications, clear, flat, 3 sided pouch, FDA approved, BPA Free, industry standard 3 mil. They are constructed of 9-layer co-extrusion film and contain a minimum of 20% nylon. Common uses include processed meats, cheeses and many other items. Used with chamber vacuum sealers or impulse sealers, snorkel style vacuum packers, for the food industry, medical industry, and clean room sterile purposes. Boil-able, microwaveable, freezer safe.