【SECURE YOUR CAR BEFORE IT'S TOO LATE】- Simply place your car key fob in the Faraday bag and you're protected. Double-layer signal blocking Faraday bags protect your belongings from EMF, RFID and other hacking signals! You don't have to worry about thieves amplifying your remote key signal and opening your car anymore, effectively preventing your keyless remotes from being accessed remotely.【RFID PROTECTION FUNCTION】The Faraday bag is made of premium material with carbon fiber structure and two layers of shielding material, which can block phone calls, SMS, WI-FI, bluetooth, 5G, NFC signals, etc. It is suitable for all size key fobs. Signal blocking bag protects your car and credit card. Simply place your car key in the bag and you will find no response from your cars.【IMPROVED DESIGN】Upgraded zinc alloy hook and inner key ring. More sturdy and portable. Portable hook can be hung on your pants or backpack, the inner key ring ensures that you can easily take out your car key. All materials have been rigorously tested, ensuring that the Faraday bag works perfectly even after long periods of use. Reliable, high quality, handmade.【CONVENIENCE & 2-PACK】The size of the car key signal blocking bag is 8*13cm. Which is easy to carry. We provide 2 medium-sized bags for you to protect your spare key fob or multiple vehicles in your household.