This may be our most versatile card case wallet, and one of the most popular. This card wallet is small and super slim. One side of the interior is an ID window pocket. On the other are 2 pockets, one of which is gusseted, giving you a depth of nearly ¼â€ The gusset pocket can carry numerous business cards, credit cards, as well as some folded currency. For this reason, this “card case” is often used as a wallet. Embedded RFID blocking technology helps keep your personal information safe. The gusset pocket can carry numerous business cards, credit cards, as well as some folded currency.