1.Well Constructed: Made of hard colored plastic. Waterproof & sturdy enough to keep papers safe. Acid-free and archival quality for safe storage2. Convenient: This expanding file folder features design which keeps the papers inside much more secure. Much easier to carry from place to place and less likely to lose something as well.3.Plenty of Room: it is large enough to keep all of your important documents securely without getting all bunched up but also compact enough to carry in a backpack. 4.A nice gift for people who at school.