There is certainly no short of wallets on the market, but few are quite like the 'Aki' slim bifold wallet from Kisetsu. Designed to offer ample storage for cards and cash, the 'Aki' wallet also packs a miniature pen for jotting notes or signing documents and even provides comprehensive protection for RFID-enabled cards.
Created with the traveler in mind, the 'Aki' wallet features a secret compartment for holding a SIM card to always have it on-hand. Rather than using traditional wallet design aesthetics, the 'Aki' slim bifold wallet does away with certain characteristics to save space. No bill section is evident in the design, but rather replaced with an elastic band to hold paper money securely in place