Description: This water pen is used to draw at the magic water painting mat or book. It does not need extra pigment, only fill it with water. Easy to use, harmless and keep baby's clothes and hand clean while painting. Features: Easy to use, eco-friendly, harmless and no more bolt on baby's clothes while painting. Small size, light weight, easy for little baby to grip. No more pigment required, the pen just needs to be filled with water. Fill the pen with water and it can be used repeatedly. Baby can use the pen to draw at the magic water painting mat or book. Specifications: Condition: 100% Brand New Shell Material: Plastic Shell Color: Blue, Pink (Optional) Suitable Age: 3 years old above Size: approx. 10*1.4cm / 3.94*0.55in Weight: approx. 9g Package Included: 2 x Magic Water Pens Only How to use: 1. Unscrew the pen. 2. Fill the pen with water. 3. Coloring. 4. The color will magically disappear about 10 minutes. (the time depends on actual environment)