With a proprietary pull to open locking zipper, these barrier bags provide a child resistant solution to safeguard products. Our child proof mylar bags can be heat sealed and are classified in accordance with ASTM D3475 and are lab tested and certified using CPSC standards. These pouches are sure to impress at health centers, cannabis conventions, head shops, marijuana dispensaries, weed industry fairs and more! (Fits approximately 28 grams)