Floating Drawings: For best floating result, we used specially-made ink, fast dry and insoluble in water. And please rest assured that the markers are safe & nontoxic for kids to use, harm-free to skin or health. What's more, easy-to-erase ink allows kids to wipe off drawings easily and re-create freely. Explore the fun of floating patterns with your kids now! Multi-Functional Apart from being fun floating pens, they are also drawing markers or dry erase whiteboard markers, ideal for classroom, office and home use Work on Many Surfaces Especially Whiteboard Markers roll fluently on most surfaces including sketch book, mirror, paper, plastic, fabrics, calendar, poster, glass, cards, menus, car, bottle, cups, ceramic tiles, etc. Whether you are teacher, student, artist, office or restaurant owner our washable markers creating beautiful messages effortless. More various color markers with cheaper price! With durable bright ink easily to read markers in the classroom or council chamber. Specially-made ink Easy to Wipe Off Safe & Nontoxic Wide Applications