Uses a smart ring that allows the cover to be folded back
The cover can be folded back, making it slim and easy to carry, and saving space
The ring diameter can accommodate up to 60 cards, so if you add an index, you can use it for multiple subjects
Since the stopper function is added, it will not open carelessly in the bag
Recommended original base paper for writing/Sarasara base paper is hard to bleed and ink is hard to see through to the back. In addition, it is a neutral paper suitable for long-term storage
