Fiber Passport and Credit Card Protector &ndash; Set of 10 Credit Card and 2 Passport RFID Blocking Sleeves; Fit in Wallet and Purse Security. RFID Blocking Sleeves contain a specialized metal composite which blocks RFID signals, protecting your personal information from unauthorized scans. FIPS 201 Approved by the US Government as Electromagnetically Opaque Shield. Quality. Resilient, tear-resistant Tyvek material is designed to endure daily usage and travel. Made in USA. Efficiency. Cards will slide in and out of credit card protectors with ease. Compact. Slender cut fits snugly in your wallet or purse for ultimate space-saving. Guarantee. We have your satisfaction or you have your money back.