Secure your belongings with these 2 x RFID Car Keys and Credit Card Signal Blockers Pack of 2 card holders Helps car theft prevention and designed to protect credit cards Aims to prevent accidental data loss and corruption Prevents RFID, NFC, Bluetooth and GPS/SatNav networks Also prevents 2, 3 and 4G mobile phone and Wi-Fi connectivity Stops all frequency signals being sent or received by your car fob Tough twin-pocket design, one for signal blocking and one for general storage Secure, hook and loop fastening High quality waterproof synthetic leather body Dimensions: 20cm x 10cm x 2cm (open) / 13.5cm x 10cm x 2cm (closed) Accommodates fob designs for most manufacturers and models (see Full Details for list) Keep your items safe with these 2 x RFID Car Keys and Credit Card Signal Blockers for 4.99 pounds