Keep it all organised: The utensil bag holds pens and other accessories wrapping your notebook.
The Moleskine utensil band for the large notebooks is a practical organizer: It keeps it all in one place. At the front and at the back there are open compartments holding pens and other longer objects like compasses, small rulers and more.
In die lateral zip-pocket your will be able to hide smaller things, like rubbers or sharpeners. And the loop at the side can hold pens. That's how there is everything you need at work (or in your creative leisure time) with the legendary notebook.