12-Pack LINKYO Protector Sleeves for Credit Card and Passport with RFID Blocking Technology (Premium Design) SHIELD YOUR INFORMATION - Protects passports, credit cards, debit cards, ATM cards, driver's licenses, transit cards and other RFID-enabled ISO 14443/15693 and EPC Gen 1/Gen 2 contactless Smart Cards and RFID Tags SIMPLY SECURE - Linkyo sleeves are lined with a powerful electromagnetically opaque shield, FIPS 201 APPROVED by the US Government, which blocks signals from unauthorized scanning devices and electronic pickpocketers WATER, TEAR & PUNCTURE RESISTANT - They may look like paper, but LINKYO sleeves are made of a special durable material that is designed to withstand the stress of constant daily use EASY TO TEST  To check that your RFID Blocking Sleeves are working, simply drop by a Walmart, CVS or other big-box retail store and try them out on the checkout scanner BUY WITH CONFIDENCE with our No Risk 2 Year 100% Quality Guarantee