This latest technology of Water painting arouses children's curiosity. Use these pens to paint on Ceramic Spoon. When encountering water,the drawn pattern or character will float by itself over water, which is very interesting.The technology in these colour pens makes it insoluble in water so that anything drawn with these pens will float on water.Children will experience the joy of floating characters over water. It's very important to the children's sensory development. Its also a fun game for adults also and can be enjoyed in family Get together.