Protect Your Car Before It's Too Late- Simply place your car key fob into the Faraday bag and you'll be protected. Double-layer signal blocking protects your belongings from EMF, RFID, and other hacker signals! No more worrying about thieves amplifying your key fob signal and opening your car, effectively blocking your keyless entry key fob from being remotely accessed.RFID ProtectionMade of premium carbon fiber texture material and two layers of shielding material, it blocks calls, text messages, WI-FI, Bluetooth, 5G, NFC signals, etc. Suitable for all key fob sizes. The signal blocking bag protects your car and credit cards. Simply place your car key in the bag and you won't notice any response from your car.Improved DesignUpgraded zinc alloy hook and inner key chain. Stronger and more portable. The portable hook can be hung on pants or backpacks, and the inner key ring ensures easier access to the car key. All materials have been rigorously tested to ensure that the Faraday bag will continue to work properly even after a long period of use. Reliable, high-quality, handmade.Convenient & 2 PackThe car key signal blocking bag size is 9*14cm. Easy to carry. We provide 2 medium bags, you can use them to protect your spare key fob or multiple cars in your home.