Grey Shielding Bags Bags. Dimensions: 12 inch W x 16 inch L Color: grey Closure: open top Quantity: 500 pack Shielding bag is suitable for packing of PCB,IC and other static sensitive components. The kind of bag can keep static-sensitive components away from the potential static danger to the largest extent. Its special four -layer structure can create such effect as an inductive cover to separate the goods inside from the static field. The inner layer is made from ethane which can remove the static and avoid static generation inside the bag. The semi-transparent material allows for easy identification of contents, so the goods inside can be easily recognized from outside. Because these bags are fully heat sealable the contents are effectively protected from moisture, vapor, grease and foreign matter.