Our Anti-static Evidence Bags are made of a specially treated polyethylene material designed specifically to be used with sensitive items such as hard drives, cell phones, MP3 players, or any type of electronic device or component that can be damaged by static electricity. Our Anti-static Bubble Bags provide superior cushioning and protection for delicate items. They feature a self-sealing glue strip which can be closed and reopened. For evidence security, these bags can also be heat-sealed with an impulse sealer.