RFID stands for Radio Frequency Identification.
The concern is that some credit cards, passports, and driver’s licenses now come with embedded radio frequency identification chips. When activated by an RFID reader, these chips transmit certain types of information wirelessly, so that you can verify your identity or even make a purchase without swiping your card. Shields or wallets marketed as RFID–blocking devices can make it more difficult for someone to acquire this information.
When making a wallet or bag that includes space for credit cards, passports, and driver’s license, line that area with RFID Cloth.
This RFID Cloth is 23% Copper + 27% Nickle + 50% Polyester
Shielding Efficiency is 99.99%
Do not iron or bleach.
Hand wash or clean with wet tissue and cool water.