Passport sized TRAVELER’S notebook starter kit. This Passport sized notebook features a simple cow leather cover that is hand made in Thailand. We also included Designphil’s original paper that is crafted in Japan. The color is deep blue similar to indigo dye or blue black ink and reminiscent of an azure blue sky just before dawn. 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, you can add as many refills as you like. 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 matures, ensuring that your interaction with it will evolve over time.