The Pigma Micron is a fine-point drawing and illustration pen that utilises the highest quality archival formula -known as Pigma ink.For serious technical and artistic applications, Micron is ideal for archival recording, illustration, graphic art, scrapbooking, freehand manga drawings, and decorative fabric design.All Micron pens have archival quality Pigma ink, are non-smearing when dry, waterproof and chemical proof, fade resistant, and don t bleed through most papers