Our silver back and clear barrier bags are a quick solution for cannabis packaging, both for store front and personl use. These mylar bags are are heat sealable for tamper proofing and include a tear notch for easy opening. Our barrier bags are sturdy with a wall thickness of 4.5 mils and feature moisture and oxygen resistant properties. The zip-locking mechanism allows the bags to be reclosed after opening. These bags are suitable to hold 1/2OZ comfortably.