Antistatic Bags ESD Open Top & Resealable Shielding Bag For Small ElectronicsAntistatic bags are made from Polyethylene Terephthalate (PET), that offers multiple layers of protection. One layer is a silvery metallized film that protects electronic components from both mechanical and electrostatic damage. PRACTICAL: Each anti static bag is semi transparent and translucent to allow you to see what is in them. No need for labeling them on the outside! Resealable anti static bags have a ziplock closure to prevent contents from