Anti-Static E.S.D. Pouches - An anti-static bag is a bag used for storing electronic components, which are prone to damage caused by electrostatic discharge (E.S.D.). These bags are usually plastic polyethylene terephthalate (PET) and have a distinctive color (silvery and somewhat clear for metalized film, pink or black for polyethylene). It is important that these bags only be loaded and opened at static-free workstations.