General description The AlwaysH 2pcs Black Carbon Fiber Anti-Theft Car Key Protector Bag is designed to protect your vehicle keys from signal theft. With its effective signal blocking function, this Faraday pouch prevents thieves from amplifying your key signal and gaining unauthorized access to your car. The set includes two pouches, one made of carbon fiber and the other of leather, both equipped with signal blocking capabilities to safeguard your spare key. Technical specifications Dimensions: 127mm x 80mm Material: Premium RF shielding material, carbon fiber, and leather Usage Protects vehicle keys from signal theft Can also be used for embedded access cards and other small electronic devices Other information Easy to carry with a hook for attaching to backpacks or jeans Durable design, resistant to tearing and cracking Note: Manual measurements may allow for a 1-3cm error; color may vary due to lighting and display differences