These bags are certified child-resistant and labeled with instructions for adult use. Zipper closure deters child access to content. Bags are tamper-evident when heat sealed above the zipper. The 5 mil foil barrier controls oxygen and moisture to provide a long shelf life. Great for applications that require nitrogen flushing. Low moisture vapor transfer rate maintains shelf life protecting your flavor brand. Bottom gusset allows bag to stand up and expand for bulky items.