We bought the portfolio for our daughter in the third grade. In the knapsack, the box fits perfectly and it also fits very much into it. Worksheets, notebooks and staplers are very well protected. We are completely satisfied. Our daughter is thrilled by the handling. So far we had Elastic folders. You always had to take quite out of his knapsack out, put the leaves properly and then shut the wallet again and wrap. As with her always have to go all very quickly and they naturally prefer talking to friends during the break, many worksheets landed just as the satchel. With this portfolio, it has become easier for them, because the portfolio remains stuck satchel, yet they can put in the sheets neatly. This protects our nerves and their :-)