THEY ARE PERFECT FOR KEEPING FOOD AND HERBS FRESH, ELECTRONICS DRY AND PROTECTED, AND GREAT FOR TRAVELING, CAMPING, OR DIVING. THESE AMAZING BAGS ARE SUITABLE FOR BOILING AND FREEZING AND HAVE THE MAXIMUM PUNCTURE AND TEAR STRENGTH OF ANY ZIPLOCK BAG. THEY ARE EASY TO USE WITH HEAT SEALING EQUIPMENT AND PROTECT AGAINST CORROSION AND OXIDATION.