In 2019, at the San Francisco Pen Show, Yamamoto debuted theirCosmoAir Light paper. They claim it's the best fountain pen friendly paper around. Many fountain pen lovers agree because of the way they are able to see the high contrast, sheen and shading on the page as well as how vibrant their inks are. When the paper debuted it was only available in packages of loose leaf sheets or taster packs and it quickly sold out. Demand was high. Yamamoto decided to create a notebook with the highly coveted paper and theCosmoNotewas born. The notebook is an A5 size with a stitched binding ensuring that the notebook lays flat when open. Each notebook comes with a double sided underlay guide that has a 12mm lined rule on one side and on the reverse a 6mm grid. It is a fantastic notebook with paper that really highlights any ink that you use for writing or for sketching.