<p><b> Coloring pens dual tips for coloring books, a great gift Idea for girls, boys, teens, adults. Create unique custom gifts for your family or friends.</b></p> <p><b> Durable and durable: Made of water-based ink, dries quickly, these markers for coloring books for adults can leave lasting marks on most surface.</b></p> <ul> <li> <b>Soft thick nib 3mm and signature nib 0.4mm, this markers for adults fits for drawing, filling in large areas and fine line work.</b></li> <li><b> Fine liner: You can use fine liner for Lettering, Writing, Sketching, Highlighting.</b></li> <li><b>The ink is non-toxic, acid free, odorless and dries in a flash. We've included a bonus container to keep your markers close at hand. Take your creations to the next level with amzla!</b></li> </ul> <p><b>Notes:</b></p> <p></p> <ol> <li><b>Shake the marker pens before first-time use or if they have not been used for a while.</b></li> <li><b>Hold the marker pens upright to allow the ink to flow smoothly.</b></li> <li><b>Close the caps tightly to prevent the ink from drying out.</b></li> <li><b>Do not remove the caps forcefully.</b></li> <li><b> If the ink does not flow, press the pen tip down for 2 minutes. </b></li> </ol>