CHILLICHALK Premium CHALK MARKERS, Eco-friendly Liquid Pen WI Unique Reversible Tip, 10 Neon Colors, Water Based Ink Non-toxic, Easily clean up, Perfect for Chalkboard, Glass, Metal, Plastic, etc. SPICE UP YOUR CREATION! Our product will Enhance Your Craftwork and bring a lot of color, fun and efficiency to your life - try it and find out for yourself. PERFECT FOR NON-POROUS SURFACES! Writes easily on glass, tile, metal, whiteboards, plastic, chalkboards, stickers, Mirror, Ceramic, Bistro Menu, etc. EASY CLEAN UP! Just wipe it with a damp cloth. Designed to wet erase on all non-porous surfaces. SAFE FOR KIDS, NON-TOXIC INK! can be used by children from the age of 3. REVERSIBLE TIP! You can choose a bullet or chisel tip. Let your imagination run wild, Just Remove the tip and switch it around.