We chose our military-grade materials for their durability and, in turn, created a wallet thatβll last a lifetime . RFID BLOCKING β Breathe easy because your cards will be surrounded by the metal body of this wallet protecting them from even the most powerful RFID Chip Readers. FUNCTIONAL & SLIM β Holds 1-12 cards without stretching out. The slim wallet is ideal for carrying business cards, credit and debit cards, bills etc. The outside notch allows you to push out the cards easily.