Delphonics classic notes with rollburn pocket and a special underlay for attaching to the Rolleburn diary - hook the top nail on the ring and set it to the bottom hole.Set it in the notebook for good writing and use as an index instead of a ruler on the surface and also comes with a pen holder to hold a thick pen ※ Material: PVC ※ Rolling Bar pocket Note/Diary Fits Large Sizes Size: Height = 179mm Width = 164mm Item Color Trend: Black