Days Square Grid Notebook with Mini Ballpoint Pen in Yellow by Marks Inc.Days Square Grid Notebook with Mini Ballpoint Pen by Marks Inc. A compact square notebook featuring a die cut slot designed to perfectly hold the Anterique X Marks Inc. Mini Ballpoint Pen. The vibrant 5mm grid coloured pages add a touch of fun to your every day notes. The attached elastic band keeps the pen securely in place, allowing you to keep the notebook and pen as a set. The clear clear cover lets you see the pen in your notebook, so make sure