This magic water coloring book is based on the environmental protection, it allows kid to color patterns repeatedly. It only uses water to color and no more pigment needed, you will worry that kids' clothes and hands are stained any more. Nice preschool toy for your kids.Features:The magic pen can be refilled with water to draw, no more pigment needed, keeping kids' clothes and hands clean. After the water evaporates, the color will disappear gradually, so it can be painted repeatedly. Helps kids to learn a lot, nice preschool toy for your kids. It is an easy coloring way which could inspire kid's interest in painting from an early age. Portable coil binding and loose leaf design, the coloring book is flexible to turn pages and easy to carry.Specification:Condition: 100% Brand NewMaterial: PaperStyle: Journey, Dinosaur, Animal (Optional)Suitable Age: 3 years aboveSize: approx. 19*15.5cm/7.48*6.1inWeight: approx. 162g / 5.7ozPackage List:1 x Water Coloring Book1 x PenNote:1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.How to use:1. Unscrew the pen.2. Fill the pen with water.3. Screw the pen.4. Coloring.5. The color will magically disappear about 9~10 minutes.(the time depends on actual environment)