Keep your documents safe with our large document cases! And what's better--these cases hold lots more than the average document case! Holding up to 500 sheets of 20lb paper, you can really get your office organized quick. These folders are made out of polypropylene, which is tear- and water-proof. The case features heavy-duty sewn edges with an elastic closure for the maximum durability. Keep your office working at its optimal speed with C-Line organizing tools.