... a special magic pen.It has rose-red, orange, green, blue and violet five kinds of colors, children's ... disappear, without leaving any trace.With this magic pen that allows children to practice writing, but also ... ,cloth or sheet,you just wipe it with water,the writing disappeard at once,it can auto ... .3.Repeatly used,economy and beneficalV-CLEAR doodling pen,with the durability of 1 year,can be ...