I've had a hard time trying to find resealable Mylar zip closure bags with transparent fronts that are large enough to hold up to a pound of dried herbs and flowers. I work for a local medical herb dispensary, so I deal with larger quantities of dry herb than most people, and following state and federal regulations for the transportation of medical herb is non-negotiable. These Mylar bags not only have the transparent front that displays the contents perfectly, but our required strain/THC content stickers adhere perfectly, and I can just run these through our heat sealing machine and it creates a perft air and water tight seal that is one of our manditory regulations anytime a patient makes a purchase and will leave the store with their purchase. These bags seal perfectly with heat, allow the product to be completely viable and are large enough to hold up to a pound of dry flower in them. They are exactly what I needed without any issues whatsoever.