Liquid Chalk Markers - BRAND NEW Lids to Prevent Damage to the Nib - Craft Box USA - 10 Chalk Ink Pens - 6mm Reversible Tip - Use on Chalk Labels, Glass, Restaurant and Bistro Menu Boards - Kids Art INNOVATIVE NEW DESIGN SMOOTH LIDS: This prevents any damage to the pen nib. Even the best quality markers suffer from damage due to the design of the lids currently out there, especially when used by children. Problem Solved - you will never look back!!! ENTERTAIN THE CHILDREN: Watch them create chalk art designs, wash them off and start again; and see their excitement at being allowed to draw on the windows! Perfect for practicing writing and spellings, doing math and playing games, making learning fun! 6mm REVERSIBLE TIP: For double the fun and creativity! Perfect for fine or bold text and drawings. Ideal for use on Restaurant, Bistro and Sandwich Chalkboards. The colours are vibrant and long-lasting. Dust free to give a clean, professional finish VERSATILE: They can write on any non-porous surface including chalk labels, mirrors, glass, car windows, white boards and even metal. ALWAYS ensure you are using a Non-Porous surface (not all chalkboards are so please do check), and you're good to go! MONEY BACK GUARANTEE: We have no doubt that you will love our liquid chalk markers, and we're so confident that we offer a 90 day money back guarantee! Your satisfaction is our priority