OPTEXX?? RFID/NFC Blocking Sleeve Fred Black Credit- / Debit Card Protector Id Theft Protection Case with OPTEXX?? Protection; Made in Germany &#10102; Best RFID Blocking German TV certified &#10004; &#10103; OPTEXX RFID Blocking Sleeves from hard plastic (PVC) &#10004; &#10104; Fits all cards in ISO-format (credit card size) , PayPass, PayWave &#10004; &#10105; RFID Blocking Made in Germany &#10004; The blocking sleeve consists high-quality rigid PVC foil. The protective material, which is invisibly attached double sided, was specially developed for shielding radio waves. When using this sleeve, the communication between reader and chip is blocked and no data can be read involuntarily.