Kokuyo's Campus Smart Ring binder notebook is ultra-slim and light. As with binders, you can re-arrange pages by opening the rings, but this notebook is as slim as a regular notebook. Slip several in your bag, and you'll see how easy it is to carry them from place to place. Great for meetings and classes, the notebook has flexible covers that fold back to occupy less desk space. This notebook contains a contents page and 10 sheets of B5 Kokuyo Campus Sarasara loose leaf paper with 36 lines of dotted 6 mm rule per page. The maximum capacity is 25 sheets.The notebook comes with a plastic casing that covers the top part of the spine. Carefully remove it before using the notebook.