Not only need a case to protect your iPhone 4 or 4S, but also want a card slot to hold your cards and cash? Take a look at Eyn iPhone 4 case, it may be suitable for you.
This is a multiple functional protective case designed for iPhone 4 and iPhone 4S. As we can see from the images, the iPhone 4S case features hardshell construction in order to protect the iPhone 4 or 4S from bumps and scratches, and comes with a built-in storage area to hold your credit cards, cash and some small items, while the internal mirror is perfect for quick touch-ups. When opened a bit, the back cover doubles as a practical iPhone stand to hold your iPhone 4 in landscape viewing mode. Apart from that, the buttons and functions of your iPhone 4 are accessible via custom cutouts, and the lanyard hole allows you to take your device with ease.
Eyn iPhone 4 case is priced at $29.99 USD. If you’re interested, jump to ThinkGeek for more details.