General description The Key Cases (2 pieces) are designed to enhance the safety of your vehicle by preventing unauthorized communication between your car and its key. With a universal size of 19.5 x 9 cm, these key cases are suitable for various car brands including BMW, Volkswagen, Mazda, Renault, Mini, Audi, Mercedes-Benz, Skoda, Opel, and Ford. The cases feature a comfortable design with two loops for easy attachment to jeans or key rings, making it simple to insert and remove keys. Technical specifications Open size: 19.5 x 9 cm Bag size: 14 x 9 cm Material: Environmentally friendly carbon fiber Function: Anti-scanning RFID information, anti-radio frequency information leakage Usage Wipe clean with water or a small amount of detergent Avoid dry cleaning, exposure to direct sunlight, ironing, or bleaching Other information Includes: 2 sets of car key covers Waterproof and odor-free Durable material for better shielding Features an internal retaining ring for securing the key