Chalkboard Chalk Markers by VersaChalk - Classic Colors (10-Pack) | Dust Free, Water-Based, Non-Toxic | Wet Erase Chalk Ink Pens PROFESSIONAL QUALITY INK - We use the finest ink from Germany that dries in seconds. It doesn't easily smudge once it is dried but can easily be erased with a clean and damp cloth! ULTRA VERSATILE: Experience the freedom to write on any non-porous surfaces such as chalkboards, plastic, metal, glass, vinyl, and slate! ERASE EASILY - Wipes away cleanly from non-porous surfaces with a damp cloth. CAUTION: Does not work with chalkboard paint. Not all surfaces are non-porous. Always test first! EXTRA DURABLE REVERSIBLE TIPS - While other brands of markers have tips that fray easily, VersaChalk's high-density reversible marker tips are built for professional use. Our REVERSIBLE TIP allows you to write in fine and bold lines - just flip the tip over to switch between bold and chisel tips! NON-TOXIC, ODOR & DUST FREE - Odorless, washable ink is great for indoor & outdoor use! It's also perfect for kids