To solve problems in which in a conventional documents pocket for a file, even documents on the back side are easily drawn out when inserted documents are drawn out, all documents have to be drawn out when a character or the like is intended to be partially entered in a document, the contents of documents inserted below cannot be confirmed if the documents are not slightly drawn out, and also insertion of documents is troublesome.

A partition sheet adheres to the deposition part on the binding margin side and is incorporated in a pocket, and also the upper part of a pocket bag body above a position located below from the top on the order of roughly 1/3 to 1/4 of the pocket is widely cut into a valley type.