Blocking the Signal features RFID blocking material to help prevent unauthorized access to your car key, enhancing property safety. Protect your vehicle from potential keyless entry theft. The front pocket provides shielding for ID cards, credit cards, and similar items. The back pocket is designed for car key fobs, offering signal blocking protection. Effectively blocks signals including cellular, Wi-Fi, Bluetooth, 5G, NFC, RFID, and other wireless transmissions for devices placed inside. Constructed with high-quality carbon fiber textured material and dual-layer shielding technology. Combines reliable signal blocking performance with a sleek design. Dimensions: 3.5" x 5.7". Secure flap closure with elastic ensures compatibility with various keychain and small device sizes. Integrated keychain loop adds convenience. Attach keys to the chain and use the external loop to hang the pouch on jeans, belts, or backpacks.