RFID Bag Key Signal Blocking Shielding Pouch Cell Phone Blocker Wallet Features: Block Credit Card Signal Which can prevent unwanted signal communications and signal amplification attacks to your card and devices Block Car key Fob Signal Keep your keyless entry remote fob system from duplication and the "always on" relay hack It secures credit cards and RFID chips from hacking. Protects staff personnel access cards from being copied It is in mini size and easy to carry. Portable design, easy to carry out every day Each pouch includes 1 modular key ring that can be removed It can block RFID, Wi-FI, NFC, KEYS, MOBILE, BLUETOOTH signals There is a signal in one bag. One is not available. Specification: Color: Black Material: PU leather with Carbon Fiber Grain There is 2-3cm difference according to manual measurement. What You Get: 1 x Car Key Signal Blocking Bag