About Coloring: Aen Art Gel Pens set contain 30 INDIVIDULE colors, enjoy vivid color on Amazon! It will bring much more fun for Adult book Coloring, Scrap booking, Sketching, Doodling, Drawing, Writing, and all the other art designs. High Performance: Each gel pen writes smoothly and easy to hold as they come with soft grips. 40% MORE INK for long last and would produce perfect lines for Home-Made Invitations, Making Greeting Cards, DIY Decor & Letters to Friends & Family etc. Value Gift Set: Those 30 colorful gel pens are divided to 5 ink groups. 4 Classic, 6 Flourescent, 6 Pastel, 6 Glitter and 8 Metal. The possibilities are endless. You can use those pens for shading and lettering as well.