I purchased this for my son's Boy Scout book with spiral binding and it fits inside just right. There is also a bit of extra room to put a small notebook/planner/phonebook type booklet inside with it. It zips shut and then on the front there are a bunch of various sized pockets to store various items. My son can keep pens, a small bottle of hand sanitize, his pocket knife, some band aides and a few other things in these pockets so that he is prepared at troop meetings. The color also blends well with his uniform and he has gotten a lot of compliments from other boys and parents. The mom bonus for me is that his book isn't all dirty and falling apart like some of the other boys books! I found out quickly that the boys bring them but often toss them around, or if they see them laying around they have no problem stepping on them while running around playing. Even the older boys that should known better. For some reason they do this will plain books but not with bags or covered books so this helps to protect the book from him and the other boys!