This is a zipper case for Traveler's Notebooks. One end is a zipper case, and another end has a pocket. In the zipper case, you can put coin, receipts, or name cards and in the other end, you can put cards. Also, the back side of the pocket will allow you to insert the cover if your passport of your refill. Please use this by covering one of the notebook refills with the leather cover of Traveler's notebook.