10-Piece MyLifeUNIT Colored Fineliner Pen Set, not just for children but for adult coloring books, artists, students or just for everyday coloring fun; these pens are simply the best! Now in a Set of 10 assorted colors with more color choices and BRILLIANT COLORS, 0.4 mm Fine Point, Assorted, Minimal Bleed Thru Ink; these are the preferred coloring pens. Fineliner pens have a superfine, metal-clad tip and ergonomic shape for relaxed and easy writing.