Enjoy smooth, permanent writing with the Signo 307 gel pen. It features an innovative cellulose nanofiber ink derived from the same tree pulp used to make paper. This material gives the ink an exquisitely smooth, skip-free writing experience. Like other Signo pens, its pigmented ink is also water resistant, fraud resistant, fade resistant, acid free, and archival. Complementing these great writing characteristics are a stylish body design and a comfortable textured rubber grip.