SECURE YOUR CAR BEFORE IT'S TOO LATE - Simply place your car key inside the Faraday bag for instant protection! These double-layered, signal-blocking Faraday bags shield your belongings from EMF, RFID, and other hacking signals! Stop worrying about thieves amplifying your remote control signal and opening your car. Effectively prevents remote access to your keyless fobs. RFID Protection Function: The Faraday bag is constructed with a superior textured carbon fiber material and two layers of shielding material, which can block phone calls, SMS, WI-FI, Bluetooth, 5G, NFC signals, etc. It fits all car key fob sizes. The signal blocking pocket protects your car and credit cards. Just put the car key in the bag and you will find no response from your cars. IMPROVED DESIGN: Features an upgraded zinc alloy hook and keyring inside. More robust and portable. The portable hook can be attached to pants or a backpack, and the inner keyring makes it easier to remove the car key. All materials have been rigorously tested, ensuring the Faraday pocket works perfectly even after extended use. Reliable, high quality, and handmade. CONVENIENCE 2-Pack: The size of the car key signal blocking pocket is 9*14 cm, making it easy to carry. We provide 2 medium-sized pockets so you can protect your spare key or multiple vehicles in your household.