For some important documents that you want to preserve and/or don't want to pierce there is a solution: store it in a plastic sleeve like this one: http://i01.

For some important documents that you want to preserve and/or don't want to pierce there is a solution: store it in a plastic sleeve like this one: http://i01.i.aliimg.com/wsphoto/v0/1777660007/100-X-A4-CLEAR-font-b-PLASTIC-b-font-PUNCH-PUNCHED-POCKETS-font-b-FOLDERS-b.jpg http://i01.i.aliimg.com/wsphoto/v0/1777660007/100-X-A4-CLEAR... If you happen to receive US letter sized paper, it won't fit because of the width, that is too much for these, and they get crumpled.