Organizing and filing. Erwin has decided to take a language course. On one hand, he has a professional interest in it, and on the other hand, he wants to learn new things on a personal level and develop himself. He has stocked up on all sorts of materials: pens, notebooks, and index cards, as well as a dictionary. But how can he sort his words well so that he can learn them easily? With an index card box (not included) and this index card organizer from Durable, you can sort not only your vocabulary but also addresses, keywords, or technical terms. The blue color allows you to easily identify the next letter, provided the index cards are not the same color. This organizer is made of plastic, making it durable, sturdy, and easy to use.