Fiona's Colors Wet Erase Non-Toxic Liquid Chalk Markers, 10 Assorted Neon Colors, 6mm Reversible Tip / 8g ink, For Use on Whiteboard, Chalkboard, Window, Glass Trusted and Loved by Parents and Professionals: A National Parenting Product Award Winner in Educational Product and Toy Categories, a Parents' Choice Fun Stuff Award Winner, and a Tillywig Best Creative Fun Award Winner! Fionas Colors Brings Fun and Colors into Your World! Vibrant and ultra bright fluorescent colors markers let you create eye-catching erasable chalk-like drawings and writings without the mess of dusty chalk on non-porous surfaces. Premium Quality with Smart Design: Reversible 6mm chisel or bullet tip provides flexibility in creating bold or fine work. 8g of artist quality water-based ink per marker (double the amount of ink as compared to most competitors without doubling the price!). High quality firm fiber nib from Japan stays in shape throughout to produce smooth writing. Improved cap design prevents nib from damaging when closed. Easy to Use and Easy Wipe Off: Just press the tip down to start the ink flow and start writing! Easy to wet erase with a damp cloth or dry erase depending on the writing surface. Non-toxic, Odorless, and Dust-free: Safe for kids and adults while worry-free for parents! <span class="a-text-bold">Reversible 6mm chisel or bullet tip</span> provides flexibility in creating bold or fine work. <span class="a-text-bold">8g of artist quality water-based ink per marker</span> provides long hours of use before replacement. <span class="a-text-bold">High quality firm fiber nib</span> from Japan stays in shape throughout to produce smooth writing. <span class="a-text-bold">Improved cap design</span> prevents nib from damaging when closed.