Truly an extra sorter! Besides being fun to watch as well as touched, the compartments are well established and you can put a lot of documents. In addition, it has on the front 2 small compartiements order to introduce such business cards. What I do to show my association. The only small thing I did not put 5 stars is being accordion, we can not put as many documents as you would risk damaging the substance. An expandable bottom would have been great. But it remains a very good sorter object!