These heavy-duty 1/4 Mylar barrier Rx bags protect the contents from air and moisture. Heat-sealable top with tamper evident opening strip tears away to reveal a reusable zipper closure. Rx symbol with writable space to add any information you desire.
Better than the other mylar bags I have tried, but not totally smell proof. Very minimal smell, that's why the 4 star. I will definitely buy again. Bag King has some great products.
