What do you call this school supply?

Question

They can be used as binders, and open up at the top and are divided into many sections?

It's like several folders inside and the thing is expandable. They can be plastic or folder-like material, and you can get them anywhere school supplies are sold.

The front is closed by wrapping a rope (that's attached to the top, closing part) around a circle thing on the front.

Best description I can give lol

Only answer if you know.

Answer 1

I call that an expanding file folder.

Answer 2

trapper keepers???