A convenient system that was also a stationery store anywhere in the United States. It seems that it is not prevalent in Japan. There was a similar system with MUJI, but the quality of the file was bad, I bought only the file this time. However, the price of the hanging case is too high, the case tried to use the Mueless good product of 700 yen, but the size does not suitably subtle, it is a shame. The case of MUJI is slightly smaller in cruise file.