Be the guy who is not only himself secure and protected, but the one who also protects his friends. Ensure your personal information is protected with a 10-pack of RFID blocking Identity Stronghold Secure credit card sleeves. These RFID shielded sleeves protect your private information from being lifted by shady thieves. Shield, block, and protect the information stored on your credit cards, driver licenses, and work or school id cards. Check out the source link for technical specifications on the type of cards which are and are not shielded.