The Shiny Metallised Mylar Flat QuickQlick Zipper Seal Bags are a family of bags that are perfect for sample packs or small portions. Crafted from food safe polyethylene coated with foil ions, these bags are smell-proof, durable and flexible. The exterior of the bag is topped off with a glossy finish for a crisp, pristine look. On the inside of the bag is a grip seal zipper to lock in the freshness of your items. For extra security, the bags can also be heat sealed and opened from the tear notches. NOT RECOMMENDED FOR FREELY FLOWING LIQUIDS (WATER, JUICE), PLEASE TAKE A LOOK AT OUR HEAVY DUTY FOIL BAGS FOR LIQUID STORAGE.