SHARKK Aluminum Wallet Credit Card Holder With RFID Protection Made By SHARKK Brands High grade plastic wallet with aluminum shell, custom design by SHARKK brands. Integrated RFID repellant technology protects you from Credit-Card scanning thieves. Seven secure slots fold out accordion style and hold up to 9 cards. Standard Size: 2.75" x 4.25" x 0.75" Do not stuff the wallet more than the allotted space.