1. [Why may you need someone] These Faraday bags can effectively protect your car and privacy. Faraday bags that block the Lanpard signal protect your belongings from EMF, RFID and other hack signals! Effectively stop the remote access of your keyless input FOBs or phone. Protect your personal and financial data by preventing RFID browsers and readers from detecting the RFID signal of your card. .2. [Multi -use] Radiation protection of pregnant women, ID cards, bank cards, etc. Can also be used for. If you do not want to answer the phone, you can put the phone in the bag, then the phone will be disconnected; This bag can also prevent the mobile phone GPS signal to prevent monitoring and protect your privacy. .3. The two inner layers of the [appropriate and portable] protection signal blocking materials are made of premium carbon fiber material as a normal condition. , can prevent phone calls, SMS, Wi-Fi, Bluetooth, 5G, RFID, NFC signals, etc. A modern and stylish design. .4. [2 packets of carbon fiber Faraday bags and convenience] Faraday Cage Protective Size 4.138.26 inch/ 10.5x 21cm, easy to carry. This prevention preventive chassis can hold blocking phones and protect more vehicle keys from hackers. Protect your property and privacy. Suitable for smartphones up to 6.8 '. Each package includes 2 large Faraday bags.