ZHONYEE RFID Blocking Credit & Debit Card Protector with RFID Chip From Identity Theft (1 Pack) SECURITY. THEFT PROTECTION. RFID BLOCKING - Onboard electronics designed to block 13.56 MHz frequency.Block RFID Readers from Scanning Your Credit cards,Debit cards, Banking Information,Smartcards,RFID driver's licenses and other RFID Cards.Any credit cards within its 10mm e-field are made invisible to a card reader. SIMPLY SET THE CARDS AND FORGET THE CARDS - JUST ONE ZHONYEE CARD in your wallet is all you need.No need to have a seperate sleeve for each card.Unlike thin,weak,cardboard sleeves,shaped just like a normal credit card.There is no set up required.Simply keep the cards in your wallet to benefit from the cards scan blocking technology. PREMIUM MATERIAL AND QUALTIY - Made from premium materials that will not rust,tear,or break. HIGH TECHNOLOGY - Our RFID blocking technology is powerful.Inner PCB circuit board and antenna .Any credit cards within its 10mm E-Field are made invisible to a card reader.Other products just use a thin piece of aluminum foil to block signals. SATISFACTION GUARANTEED OR YOUR MONEY BACK - 100% MONEY BACK GUARANTEE on all of our products.We are in business because we take care of our customers.We strive to serve you best. This is our top priority!