Note: Please double check what size anti-static bag you need inside, don't forget to consider the loss caused by the height of the item. Double sided coating, thickened material, all round anti static, better anti static effect, these anti static bags can accommodate various precision parts, better protection from frictional electrification and static electricity Influence, blocking direct discharge from contact with charged objects. Self sealing zipper lock design, reusable, not only protects and protects your electronic products and valuables from static interference, but also blocks dust and keeps your goods always new, both to protect the product and to display it. The anti static bag is made of polyethylene terephthalate (PET), which is durable, reusable, 3 miles thick, and has a translucent silver gray color that makes the contents inside look more high end. 100pcs anti static bags, outer dimensions: 5.9x7.8in/15x20cm, inner usable dimensions: 5.5x6.9in/14x17.6cm, suitable for storing 3.5’’ hard drives, graphics cards, memory sticks and other electronic components.