The metallic bubble mailer has two layers, which is lightweight for postage savings and of environmental protection. The outer layer is the metallic membrane, the inside is lining air bubble. The outer layer is beautiful , its unique toughness may prevent the bag from breakage. The inner layer transparent air bubble can prevent the goods from pressure, bumping, dropping,ect. Suggested applications:Drugs and vitamins ,Audio CDs, CD-ROMs ,Dental and medical supplies ,Watches ,Jewelry ,Video cassettes ,Novelties ,Spare parts Binders and so on. (The outer layer material quality may according to customer request: Aluminum foil, each kind of color aluminum-plating membrane, anti- static electricity;Print each kind of pictures, add Yi Sitiao and so on).