This pen from Pigma Micron is just what you need for drawing, doodling, sketching, note taking and more. It can create fine or medium lines based on your writing pressure. Details: Available in multiple colors 0.4 mm fine to 0.5 mm medium line widths Permanent, waterproof, archival quality ink Fade and chemical resistant Smear and bleed resistant Not recommended for use on fabrics intended to be washed Plastic, ink and steel AP Certified Conforms to ASTM D-4236