It is suitable for writing calligraphy, art decoration occasions, and can also be suitable for children's calligraphy practice to improve their interest in calligraphy.,This watercolor pen product has many advantages, such as:Nontoxic Tip blocked Washable Vivid color and Ventilated..They usually have the following characteristics and uses: Features: The paint of the watercolor pen is colorful, which can show a transparent effect and make the picture more artistic. Because the pigment is absorbed when it comes into contact with the fiber, the lighter color of the pigment is more easily absorbed and the color will change. The tip of the watercolor pen is generally round and easy to use. Use.:Watercolor pens are suitable for painting on surfaces such as paper, drawing board or canvas, and are also easy to carry and use. They are suitable for drawing detailed illustrations and expressing abstract artistic effects, and are also suitable for teaching art and design, helping to teach basic art concepts such as color theory, composition, and line. In addition, watercolor pens can also be used to create large characters or large-area painting and painting, and the color changes are rich, which is conducive to improving students' learning interest and painting level.