Aluminum casing effectively protects your cards from unauthorized scanning by external RFID readers. Our wallets have evolved to hold more cards with embedded computer chips and antennas, improving convenience but also introducing security risks. With this cardholder, you can eliminate those concerns. The card protection is the core of our design. By sliding a small lever to the side, your cards are pushed out in an overlapping sequence, allowing quick access without opening the rest of your wallet. You only expose one card at a time when making a payment, while the others remain shielded inside the aluminum case, preventing unauthorized devices from reading them. This further minimizes risk. Material: Aluminum Holds up to 5 cards Dimensions: 97 x 65 x 13 mm Weight: 62 grams