Protect your belongings in the Sunzip Anti-Virus Zipper Bags. These zipper bags are a world-class innovation from the makers of Sunmum. Each bag is treated with Silver Ion technology that stops the growth of influenza virus more than 99% within 24 Hours Made with double zip to ensure no leaks Expandable bottom: standing & space efficient Heavy-duty film for stronger seals on the sides. Food Contact Grade - You can use this to safely store: Groceries, Meals, Personal Items, Gadgets, Medical items, Cloth items, Documents, Baby & Child Items and more.