stored on 13.56Mhz frequency contactless cards such as credit cards, debit cards, RFID driving cards from e-pickpocket thieves using any RFID scanners. Descriptions:-Item: RFID & NFC blocking card-Material: PVC,ABS or PET-Suitable for all 13.56Mhz smart contactless cards-Blocking PCB mould + antenna-Dimension: 85.5*54mm-Thickness:.5mmSimply add Scanner Guard Cards into a wallet, credit card holder, or clip as shown in the pictures below to block all unwanted RFID Scanners. Any card working on 13.56MHz udes, but is not limited to:***** *****Most RFID blocking hard shell aluma wallets can NOT block 125KHz signals. But Pro-trade metal id cases are able to Block both 13.56 MHz and 125KHz Signals. Dont give thieves any chance. your Bank Debit, ID, ATM Cards be protected all the time.A metal money clip is also integrated inside the wallet to place bank notes. 【RFID Blocking Security】doeboe airtag wallet adopts advanced RFID security technology, and has been tested to effectively block signals operating at 13.56 MHz frequency, in which our credit cards, ID cards, driver license and debit cards operate.