This unique, fountain pen friendly notebook from Nakabayashi Co. is full of design touches that elevate it above other ring-bound notebooks. You'll immediately notice the split ring design—there are two separate sets of gold-colored rings holding the pages together, with nothing in between. This both looks cool and slightly increases the usable space on the page. Inside, the pages have an interesting and useful format: in addition to standard lines, there are lighter dotted lines running horizontally and vertically at regular intervals. So the Logical Prime is somewhere in between lined paper and graph paper. It's finished with a flexible, dark blue paper cover, stamped with gold script lettering.