Our transparent metallic static control bags provide faraday cage protection and visibility for highly sensitive electronic components. Meets the electrical and physical requirements of MIL-PRF-18705D Type III. These plastic bags protect against static charge from both inside and outside with three layers of anti-static protection. Rugged 3.2 mil poly bags are 50 percent transparent for easy product identification. This bag is buried metal construction; a conductive aluminum shield layer is buried between 2 static dissipative polymeric plastic layers.