LEM Products Textured 11in x 13in Mylar Bags - 50 Count - Designed to be vacuumed and sealed with external vacuum sealers, these heavy-duty, food-grade Mylar bags are ideal for long-term storage of dry goods and freeze-dried foods. Perfect for preserving the freshness of grains, coffee beans, dried beans, etc. and protecting them from light, moisture, insects, dust, and debris. Save money by purchasing these foods in bulk and then re-packing in smaller portions. The Mylar bags' 5.9-mil thickness resists puncturing and prevents oxygen and water from penetrating the bag, and a foil layer excludes light to further protect flavor and freshness. With textured sides that help eliminate hidden air pockets, these bags are suitable for sealing with an external vacuum sealer (with increased sealing time/temperature). Compatible with most external vacuum sealers; use LEM's MaxVac vacuum sealers for best results. Features PE, aluminum, PET 5.9 mil thick 11in x 13in FDA food grade, BPA free Freezer/refrigerator safe Heat safe up to 176 degrees F (80 degrees C) DO NOT boil DO NOT microwave Disposable, do not reuse 50 ct. per box Tear notch for easy opening. LEM Products recommend using oxygen absorbers (300-500cc per bag).