The inventors of the only original gel pen. The Sakura Gelly Roll contains special water-based pigment gel ink to give bright, intense colours which never fade. Thanks to the unique gel ink technology, the ink flow from the pen is always constant, without exerting any pressure.Writing, drawing and decorating is now even more fun. Moonlight writes well on white, but really comes to life on black paper. Special effect with blacklight! Store the pen horizontally with the cap on.