Drawing books with grooves for childrenFEATURES PRE GROOVED LINES: Each book contains clearly defined, pre grooved lines that securely guide the pen. This teaches children from a young age to draw precise lines and intentionally train their fine motor skills playfully and effectively. REUSABLE FUN: Thanks to the included magic pen, the drawn lines disappear on their own after a short time. This allows children to practice over and over again without wasting paper ideal for sustainable and