The high-quality double-layer color changing PU is selected, which is a high-quality leather made by a special process and has a comfortable feel. The cover is selected from double layer PU color changing leather. After hot pressing, the surface undergoes a carbonization reaction, which darkens the color and provides excellent customization effect. 1. Multifunctional card bag 2. Photo bag 3. Binder 4. Pen insertion position 5. PU magnetic buckle 6. Movable inner core (customizable)