Car key fob [Anti-Theft Precautions] - Simply place your car key in the double-layer signal-blocking Faraday bag to prevent theft. This prevents thieves from amplifying your remote control's signal and gaining access to your vehicle. This essential anti-theft device is ideal for enhanced vehicle security. [RFID Protection] The car key is crafted from high-quality carbon fiber texture and features a double-layer shielding design, effectively blocking signals such as phone calls, text messages, Wi-Fi, Bluetooth, 5G, and NFC. It's compatible with all car key sizes and won't affect your vehicle even if it's left inside. It's a must-have for protecting your car and credit cards. [New Larger Hook and Key Ring] The bag features a larger U-shaped zinc alloy hook, perfect for easily storing small items like house keys, AirTags, or a multi-tool. The built-in key ring allows for easy access to your car key. These features make our bag the perfect choice for vehicle protection and convenient travel. [Portability & Dual Pack] - This compact car key signal-blocking bag measures 9x14 cm for easy portability. We offer dual packs to protect spare keys or multiple vehicles. It's ideal for those who need secure key protection, perfectly meeting their anti-theft needs. [Lifetime Warranty and Security] - Protect your car with an anti-theft bag designed to deter hacking and unauthorized access. We offer a lifetime warranty and a full refund if you're not satisfied, giving you peace of mind. This set provides enhanced security, making it a smart choice for any vehicle.