This flat; boarding pass sized document wallet has RFID blocking protection. This zippered wallet in a practical format opens out; and has various slit pockets for cards; IDs and documents. The integrated Cryptalloy foil blocks radio waves to prevent data theft. With the “Cryptalloy” foil Tatonka uses a film that offers maximum shielding against relevant frequencies (from 100 kHz to 4 GHz; this means low; high and ultrahigh frequency range) and due to a frequency shift disturbs any radio communication. This was tested and certified by the TV Saarland.