[ WHY YOU MAY NEED ONE] These faraday bags can effectively protect your car and your privacy. DTRIEMAEM signal blocking faraday bags protect your belongings from EMF, RFID, and other hacking signals! Effectively stop your keyless entry fobs or your phone from being remotely accessed. Protect your personal and financial data by preventing RFID scanners & readers from detecting your card's RFID signal. [ MULTI-USE ] It's also can be used for pregnant women's radiation protection, storing ID cards, bank cards, etc. If you don't want to answer the phone, you can put the phone in the bag, then the phone will be disconnected; this bag can also block the Cell Phone GPS Signal to prevent tracking, and protect your privacy. [ CONVENIENT & PORTABLE ] Inner two layers of shielding signal blocking materials, outer is made of premium carbon fiber material can be used as a normal case. Waterproof, can block phone calls, SMS, WI-FI, Bluetooth, 5G, RFID, NFC signals, etc. A modern and fashionable design. [ 2 PACK CARBON FIBER FARADAY BAGS & CONVENIENCE ] This anti-hacking case blocker can hold phones and more vehicle key fobs can protect your car and phones from hackers. Protect your property and privacy. It's suitable for smartphones up to 6.8". Including 2 pack faraday bags in each package. Ps, this anti-theft pouch has a key ring, you can hang on your bag. [ ENHANCED SECURITY] The DTRIEMAEM Faraday bag offers superior protection against hacking and unauthorized access. Designed with cutting-edge technology and durable materials to ensure your car's security. Please check the model and size before purchasing.