Guess what's hidden inside? The Eagle Creek RFID Bi-Fold Wallet Vertical features a hidden bill compartment. It's a wallet that hides your money. The vertical orientation features 7 credit card pockets, a full length bill compartment, and RFID blocking technology that keeps personal information safe up to a frequency range of 10 MHz to 3 GHz. And don't forget the hidden bill compartment. There is also a life time manufacturer's warranty on this unique wallet.