Rainbow Premium Dual Tip Pens - 12 Unique Watercolors - Gift Box - Fineliner & Brush Tips - Water Based Ink - Non Bleed - Art Marker Set for Coloring, Journaling, Sketching, Lettering, Calligraphy FLEXIBLE DOUBLE SIDED TIP: Durable nylon tip that quickly retracts and reverts to its original shape, Brush Tips (similar to sharpie tip or a paint brush - 1.2 mm) allows for easy coloring, shading and blending. While Round Tip (similar to fineliner or staedtler or pentel or dupont or felt tip - 0.8 mm) enhance is great for outlining and fine detail. Pens are made with highest quality material making them durable and long lasting. EASY TO USE, CLEAN & STORE: Comes with a beautiful compact storage case which holds each pen in place. The double ended markers can fit in any desk, backpack, or locker. Its Comfortable & Ergonomic grip makes it fun to use. Water based ink can be washed off hand easily. Its Quick-Drying makes it ideal for outdoor use. ACID FREE, NON TOXIC & KID SAFE: The water-based ink is non-toxic, blend able, non-bleeding, odorless and unscented. Tips self-clean after blending making it easier to maintain their true color after use. Our Product conform to ASTMD 4236. They are completely safe for a child or adult. FULL COLOR SPECTRUM: 12 Unique watercolor brush markers with Primary Colors - blue red, and yellow. Secondary Colors - green, orange, and violet. Additional Colors - turquoise, lime, pink, magenta, brown and black. These pens cover a wide spectrum and can be blended together to make your own unique colors. IDEAL FOR PROFESSIONALS OR BEGINNERS: These promarker art kits are perfect for a wide variety of activities like fine art techniques, card making, illustrations, kids or adult coloring books, sketching, painting, drawing, coloring, rubber stamping, calligraphy, hand-lettering, doodling, journaling, rapidograph, novelty projects, sharpie projects, baby projects, coloring mandalas. They work flawlessly on most media like Paper, White Board, Cardboard, Smash book, Mixed media, Bullet Journal etc.