Why are Northface book bags so popular?

I am not exactly sure about this but I have one myself. It's very orginizing! 1 place on the top for a laptop computer, second place for books, 3rd place for pencils and things you really need to keep hold of, and 4th place looks real neat it has 2 zippers on the side and a whistle thing with no whistle and just open the whistle thing and pull down both zippers an TADA! As I said IT'S A VERY GOOD BACKPACK! That's probably why everyone likes it! There's also a kids version!