Package Includes:
1 coloring book (5 sheets consisting of 1 cover & 4 pictures)
1 piece water pen (refill with water)
How to use:
1. Fill the water into the marker
2. Scratch into the coloring book, when it's wet, the color will appear, and if it's dry, it will come back clean (without color) and so on
NOTE: DO NOT immerse the book in water
