Double the carry, not the size. With two Cardprotectors to hold double the content, the Twinwallet carries up to 16 cards, banknotes and receipts, but remains compact in size. Together with its sturdy closure and exterior, to hold extra cards, banknotes and receipts, the Twinwallet holds much but remains compact in size. The Cardprotector mechanism allows you to slide out cards with one simple motion, while the aluminum protects your cards from bending, breaking and unwanted wireless communication.