[HOOK DESIGN]: Caslord Faraday pouch features a zinc alloy hook on the top to hang on jeans or backpack. Inner key securing chain allows easy access to your vehicle key. [REMOTE KEYLESS ENTRY CAR PROTECTOR]: The Faraday pouch for car keys is made of RFID shielding material that blocks unauthorized signal amplification, helping prevent car theft by stopping keyless entry fobs from being remotely accessed. [MULTIFUNCTION SIGNAL BLOCKING CASE]: Faraday pouch blocks calls, SMS, Wi-Fi, 4G, Bluetooth, RFID, and NFC signals. [ONE SIZE]: 9 x 14 cm. Each signal blocking bag fits one car key. Includes two pouches for added convenience. [WIDELY USE]: Compatible with most car key fobs and small electronic devices that fit inside. No need to consider model or brand. Effectively blocks car key fob signals. How does the Faraday case work? Some devices can transmit signals over long distances, increasing the risk of unauthorized access. Our Key Signal Blocking Pouches help prevent thieves from amplifying your fob signal and attempting to steal your vehicle. Keep key fobs and small electronics inside the Faraday bag when not in use to block unauthorized signal access.