My best Kid offers the water marker book Magic universe and aquarium here. Available in 8 different variations on on our store, ideal for a birthday party from the kindergarten friends as a souvenir. Fill the pen with water and the background becomes visible - with multiple use of the product. It contains 4 pages that children can color and reuse again. Since no paint but only water is used for coloring, it is completely non-toxic and thus provides magical fun for all kids.