Marvy Uchida's most popular pen, the Le Pen features a sleek, slim barrel and a smooth-writing micro-fine plastic tip. The ink is acid-free, non-toxic, smudge-resistant, and available in a rainbow of fun colors. Use these pens for doodling, color-coding, or adding a boost of color to business forms, journals, yearbooks, and scrapbooks. Each pen can write for about 200 meters before running out of ink.