IMPORTANT: These are not made to be used with handheld sealers or with an accessory hose. These bags are open on the bottom for filling, then vacuumed and heat sealed to form a closed bag.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:Can Be Zip Closed to Keep Fresh Even Longer When On The GoBFA 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