These heavy-duty Mylar barrier Rx bags protect any contents from air and moisture. Tamper-evident heat-seal top tears off to leave a reusable zipper closure behind. Gusseted bottom allows for more control over fit. 

• Heat-sealable, tamper-proof top tears away for easy opening
  
• Zip-locking top allows resealing
• Expandable bottom
• Clear viewing window
• Rx bag
• Fits 1/2 oz. to 1 oz. of Flower