This consists of a simple cow leather cover made in Chiang Mai, Thailand and a refined notebook with Designphil’s original paper used that is made in Japan. You can start using the notebook as is, but by adding a zipper case or a pen holder, you can increase its storage capacity. If you add a connecting band, then you can even increase the number of notebook refills that go inside the notebook.The structure of the notebook is simple, so it’s easy to add charms and beads on to the rubber band. We also recommend adding used post stamps on the cover of the notebook. This is a notebook where you can customize it freely, and the longer you use it, the more the taste and texture of the leather deepens, making writing more fun.