Our Cali Bear white and clear barrier bags are an economical solution for packaging. 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 have an opaque, white backing with Cali Bear logo and state-specific use warnings and clear front.