1. Modular design, assemble 3 modules at your will 2. The fundamental (card module): can hold 3 cards and some cash 3. The subsidiary (bill module): with elastic band, can hold 6 cards and more cash 4. The pouch (coin / key module): bottom opening, no need for zipper 5. Each module can be separately 6. Magnetic connection design, easy to assemble and separate 7. Slim and portable, easy to carry
