The Leitz accordian folder with 31 compartments, marked from 1 to 31, is suitable for A4 documents. The numbers 1 to 31 represent the days of the month. The compartments are sealed on the sides so that documents are always safely archived. The accordian folder is made of sturdy cardboard, covered with PP foil. This makes the folder highly resistant to dust and dirt. The folder can be closed using ribbons.