Aluminium foil material. It protects against identity theft. This is RFID credit card sleeve protect your data. For a lot of cards, like cardit, debit card, enhanced drivers license, door card have a RFID chip in the card. The chip contains personal and account information. Put our card into this card sleeve to avoid fraudulent transactions. Perfect for promotion. Price listed is delivery price to NY including freight charge, duty and one color/one location imprint fee.