RESEALABLE | TRANSLUCENT BAG: Our bags allow you to easily seal your products without the need for other equipment,you can easy to see the items inside,good ideal for store electronic parts, such as hard drive,memory, earphones, data cable, ect.. We also attach num matching antistatic lables for better use. Please make sure you choose the right size. MOISTURE RESISTANCE OF CLASS II:High quality sealing belt reusable, with high sealing performance, waterproof and dampproof,it have a moisture resistance of Class II, it also can be vacuume to prevent oxidation of electronic components. SAFETY ENVIRONMENTAL PROTECTION: We bags made from high quality Polyethylene Terephthalate (PET) with an aluminized film, high and low temperature performance of ±500c, non-toxic and eco-friendly, no odor. HIGH ANTI-STATIC COEFFICIENT:The internal and external anti-static coefficient of the bag is above 10th, which is higher than the 8th to 9th power of the same industry. This must be the product you need. MULTI-USE: 100pcs3.94x5.9 inches/10X15cm anti static bags for 2.5" hard drive with 100pcs antistatic labels , It also can be used for RAM, I/O memory card, earphone, button battery, and other electronic parts.