Sakura SAK38165 Moonlight Gelly Roll Pen, Fluorescent Orange Moonlight bulk fluorescent Orange- line width 0.5mm. Luminous on White or black paper, however fluorescent colors will wash-out if exposed to direct sunlight Sakura has developed the latest technology in the Evolution of the ballpoint pen, a writing instrument that glides smoother than a ballpoint pen Dries permanent, water and fade proof