I use colors by class and teaching materials separately. I use it in 5 color set, but it says that it is a little insufficient strength, whether it is easy to break apart easily, it says splitting, it has broken.
It is a bit thin. To say that you purchased a color type is a kind of translation that you want to classify the documents you want to take in and out on a daily basis ... It is a great help if it is a type with a little more strength. On the contrary, since there are many people who are handling colorless type putting promotional materials in hand and hand over to the destination, I'd like to purchase cheaper items because they are a little thinner.