[ BLOCK ALL SIGNAL TYPES ] faraday bag is made of carbon fiber material and double military-grade RF shielding cloth waterproof which can block WiFi (2.4 and 5 GHz) Bluetooth GPS RFID car key signal etc. Simply placing your key into the closed faraday bag will prevent your car key signal from being accessible by thieves. Protecting your car at all times. Block and unlock in just 2 seconds! [ ENHANCED SECURITY] The Faraday bag offers superior protection against hacking and unauthorized access. Designed with cutting-edge technology and durable materials to ensure your car's security. Please check the model and size before purchasing. [ RFID KEY FOB PROTECTOR ] This faraday bags can protect your car effectively. faraday bags protect your belongings from EMF RFID and other hacking signals! Effectively stopping your keyless entry fobs from being remotely accessed.No worry about thieves amplifying your fob signal and opening the car anymore. [ UPGRADED DESIGN ] The faraday bag with upgraded zinc alloy hook and key chain. More strong and more portable. You can use the hook hangs on the pants or the knapsack the inside key ring ensures taking the car key out is easier. All the materials have been vigorously tested which guarantees that the faraday bag works great even after long use. Reliable high quality handmade. [ COMPACT SIZE ] Faraday bag size 3.15 x 4.5 inches/ 8 x 11.5cm. Smaller than others more convenient to carry in most pants pockets. Each faraday bag for key fob is rigorously tested before shipment and all working properly. Includes 2 small faraday bages that you can protect your spare key fob or multiple vehicles in your household.