KADEN products, also sold at BorneLund. Only one ball is included. There are some discolorations due to aging and stains from stamps. Thank you for your understanding. Similar product to Sota Fujii's educational toy, cuboro. This is not just a toy. It is designed as an educational toy to support children's sensory education, language, arithmetic skills, and intellectual development. While playing, children feel the texture and weight of the materials. This not only improves their sense of touch, vision, and patience, but also hones their mathematical and geometrical senses, logical thinking, and spatial awareness. Through the four steps of "thinking," "building," "trying," and "fixing," children develop perseverance and concentration. By repeatedly trying and failing, children's imagination and creativity grow, aiding their intellectual growth. Let's support your child's growth with this marble run building block that allows them to feel the infinite possibilities within play. [Develop Thinking Skills Through Play] Through the game of creating a course so that the marbles fall to the bottom, children experience the sense of accomplishment of building and cultivate concentration and creativity♪ Rebuild and roll, the gentle sound of wood is pleasant, and you can even enjoy the sound! [A Gift That Children Will Love] This is a classic toy popular with both boys and girls. It is also popular and attracting attention as an educational toy that promotes children's growth and development. It is unpainted, sturdy, and a toy that can be used for a long time without getting bored, making it perfect for gifts such as baby showers, Children's Day, Shichi-Go-San, Halloween, Christmas, birthdays for 3, 4, and 5-year-olds, New Year's celebrations, and gifts for passing exams, entering kindergarten or elementary school. It is also highly recommended for home use, as well as for prizes, children's associations, local communities, PTAs, play spaces, children's centers, nurseries, graduation souvenirs, Montessori education, and educational materials and teaching aids for kindergartens.