Features: Made of high quality environment-friendly carbon fiber material for durability and reliability. Special cloth is used to shield radio and electromagnetic waves. It can store car keys and prevent signal theft with double-layer design. It can also be used to store your credit cards, debit cards, door cards, pocket money and prevent them from being degaussed. It can effectively shield radiation and prevent scanning and corrosion. Specifications: Condition: Brand New Color: Black Material: Carbon Fiber Size: Approx. 12.5 * 8 cm/5.0 * 3.1 Package List: 1 * RFID Key Bag Shield Note: 1. Please allow 1-3 cm error due to manual measurement. Thanks for your understanding. 2. This product should not be excessively cleaned to avoid damage to nano-coatings and affect the use effect. 1、It can effectively shield radiation and prevent scanning and corrosion. 2、It can also be used to store your credit cards, debit cards, door cards, pocket money and prevent them from being degaussed. 3、It can store car keys and prevent signal theft with double-layer design. 4、Special cloth is used to shield radio and electromagnetic waves. 5、Made of high quality environment-friendly carbon fiber material for durability and reliability.