Experience the best Tomoe River Paper has to offer with the Yamamoto Writing Pad Sanzen – Tomoe River S A5. Building on the quality of the original Tomoe River paper, Sanzen Paper Mfg. has improved the consistency of the pulp, creating a paper that is smoother and 5 microns thicker, with enhanced resistance to bleeding, and a firmer feel. Enjoy the unparalleled writing experience of the world-renowned Tomoe River Paper.