Passport size, 12.5 by 8.8 cm, so it sits flat in a jacket pocket. Sixty pages of ivory writing paper with a faint 5 mm dot grid, thread bound so it opens flat and stays open. Yamamoto Paper have sold paper in Sakai, Osaka since 1972 and choose their stock for how a nib behaves on it. Pencil, ballpoint and fountain pen all sit well, though very wet inks are worth a test page first.
The waxed cover arrives smooth and does not stay that way. Creases hold and the edges darken, so after a few months of carrying it reads as yours rather than as stock. The Hokusai print runs over the spine and on to the back, where the village and its thatched roofs sit on the side you see each time you pick it up.