SAFE AND ANTI-THEFT: The anti-RFID car key case is suitable for all kinds of car keys, providing protection against RF information leakage (radio, Bluetooth, WiFi, GSM, GPS, etc.), anti-scanning of RFID information, blocking of car key signals, etc. HIGH QUALITY: This anti-RFID case is made of high-quality PU, strong and durable, scratch-resistant, with tight stitching, and a simple and classic style to ensure the protection of your car keys. LIGHTWEIGHT AND PORTABLE: The anti-theft car key case is 12.7*8cm in size and weighs 50g. Small and lightweight, does not take up extra space, you can attach it to your backpack, belt or shoulder bag, very convenient for your daily carrying. WHAT YOU GET: You will receive 1 black RFID blocking case and 1 red RFID blocking case designed for car keys. Each case contains one car key. The cases are universal, so you don't have to pay attention to the model or brand, very convenient. APPLICATION: Simply place your car keys in this signal-blocking Faraday pouch to block the signal. This effectively prevents thieves from stealing your key signal and gaining access to your vehicle. You can also store your credit and debit cards in this Faraday pouch. Note: All data is measured manually. Please allow 1-3 cm error. Due to differences in light and display, color differences may occur. Therefore, please check the actual item you received.