Why OutOfAir Vacuum Sealer Bags?60-Day Money Back GuaranteeThicker than other FoodSaver and generic bags 7 layers, 4 mil, PE/NylonKeeps food fresh up to 5x longerThicker means stronger - less risk of sharp points breaking the vacuum sealThicker means better - helps to reduce freezer burnWriting Area: Large white sections where you can easily write date/contentsMore Features:BFA FreeFreezableBoilable - Great for Sous VideMicrowave SafeDishwasher SafeReusableWorks with all "clamp style" vacuum sealers:Works with FoodSaverWorks with TiliaWorks with VacMasterWorks with WestonWorks with CabelasWorks with RivalWorks with Seal-a-MealWorks with ZiplocAnd othersOther UsesProtect electronics/small objects when boating or going out in the rain.Help to preserve and protect important documents/photos