Polypropylene inserts do not tear. The perforation is thus more resistant to all manipulations. They are also more flexible than card dividers. Chromaline spacers are made of soft but strong plastic. Translucent, you can identify the keys with the ballpoint pen, without the reading being altered. You can erase by erasing and rewrite easily. These Chromaline spacers are equipped with a reinforced indexing page, printable thanks to Kreaman on the Exacompta website. Thanks to the index page we can clearly identify the different parts of the ranking. For school, office or home use, Chromaline A4 size interleavers will accompany you in your organisation.