24 colors alcohol marker Through primary colors and auxiliary colors, you can perfectly complete painting sketches, illustrations, graffiti, shading, design, rendering, animation, highlight display, comics and other tasks The pen cap is marked with a color number Easy to distinguish various color Easy to store and organize after use as it come with a carrying case The coloring ink pens set is non-toxic and acid-free, safe for kids and student Ergonomic design makes working with these markers easy for a long time. Our alcohol based markers have an exceptionally good smudge and water resistance on a variety of materials. They are non-toxic and quick drying Twin marker pens are perfect for drawing, painting, highlighting, underlining, sketching, interior design, fashion design, architecture and landscape design, DIY card making etc. A great gift choice for students, artists, and drawing enthusiasts.