What is this?ESD Shielding Bag is mainly for packaging of various PCB, electronic components modem, CD-ROM, etc. It is widely used in electronics such as such as hard disks, Motherboard, Processor, I/O cards, etc. for intercompany transfers.What will I get?Colour:semi-translucent silver grayInside Size:480x700mm/18.9x27.6 inchOutside Size:500x700mm/19.7x27.6 inchMaterial: CPPThickness: 0.15mmIn the package of :10pcs Anti Static BagsAre there any advantages of the product?Antistatic bag is reusable, with high sealing performance, waterproof and dampproof. ESD Shielding Bag's special 4 layers structure forms an induction hood effect to isolate the inside items from electrostatic field.How to use it?Each anti-static bag is semi-transparent and translucent to allow you to see what is in them and easy for you to find which bag to open when you need the things.What should I notice?There may be a little error of measuring due to manual measurement.(Effective size may be shorter by 5-10mm than its described size due to manual measurement, thanks).