[Safe Materials]: The drawing book paper is made from high-quality wood pulp and is thick enough to prevent color from seeping through. The pen is made of durable plastic; the watercolor is safe and non-toxic—perfect for use by both adults and children. [Triple Set]: This drawing set includes watercolor pens, watercolor color cards, and patterned cardboard so you don’t need to buy extra watercolor paints when using it. It can also be carried around without additional items—very convenient. [DIY Bookmark]: Once you’ve finished coloring the pattern, the cardboard can be torn off and used as a small gift or bookmark. You can place it in a book or stick it in your painting collection—simple and relaxing. [Children’s Drawing Book]: This drawing book features 20 different hand-drawn patterns; each coloring session offers a unique experience. (Note: Since the amount of paint required for each pattern varies, you can keep the used color cards as a base for the next image.) [Fun Gift]: If you love coloring and drawing, try this relaxing drawing book with color embedded directly into the paper! It’s an easy-to-carry and convenient way to create art. It also helps children with color recognition and concentration—perfect for entertaining kids at parties and gatherings like birthdays, weddings, and Christmas.