travelambo rfid blocking leather passport holder cover case travel wallet elastic strap(black ch black) travelambo polyurthane and polyester lining fabric. rfid blocking - tested & approved by independent test lab for frequency 10mhz to 3000mhz, including 13.56 mhz in which our passport, credit cards, debit cards and id cards operate; practical and stylish design -designed 7 rfid lock slots: 1 slot for passport, 4 slots for cards, and 2 currency pockets; functional for your busy life - use them to shield against unauthorized rfid nfc and ble scans as reported in the media; what we can not shield is - id badges, hotel room cards and some old building access cards that operate in 125khz. customer service: if you’re not happy or aren’t satisfied for any reason, please contact us at any time.