Hanging Zipper Barrier Bags are made from 4.0 food safe materials and have a high moisture, oxygen, and odor barrier. The zipper is airtight and a round hang hole comes pre-punched for use in the retail environment. HZBB1CH has a clear front panel that allows the contents inside to be seen, while the back panel is holographic. The bag measures 2 1/2" x 9" and is ideal for holding items like vape pens, wax melts, edibles, car freshies, and more. For a tamper resistant closure, use a heat sealer to secure the bag. Without tear notches, this bag isn't easily opened, keeping the contents inside safe from children.