This refill features a sticker that you paste directly on the leather cover of TRAVELER’S notebook. By pasting this sticker, you can insert another refill. This pocket makes it easy to insert and pull out refills, so it is suitable for people who change their refills frequently. Your notebook can consist of refills that includes planner and an idea note, and by thinking of the two refills you can put, you start to realize the infinite possibilities as to how you can use the notebook.