SAKURA COLOR PROD AMERICA Micron Pen, Waterproof, Fade Resistant, 0.20mm Point, Blue (SAKXSDK00536) Ideal for graphic art, scrapbooks, freehand art, cartooning and fabric design Features an ultra-fine point that marks permanently without smearing or feathering when dry Archival-safe, acid-free, fade-resistant, waterproof, chemical proof and nontoxic