Interactive marble run system. Recommended for ages 3 and up. Number of pieces: 33. Made from plastic. Includes everything needed to build individual tracks through a jungle world. Motor skills and spatial thinking are enhanced through the free design of the marble runs. GraviTrax Junior offers children aged 3 and up a child-friendly introduction to theme-rich marble run worlds. Boys and girls create their own marble run worlds, which can be flexibly decorated to create unique themed environments. Building and play fun are combined in this experience. GraviTrax Junior can be expanded indefinitely with additional components or special elements. Sets with theme-specific decorations allow children to create their own worlds for lasting play enjoyment. Ravensburger has been established in children's rooms in Germany and around the world for decades and is the leading provider of puzzles, games, and activity products in Europe, as well as children's and youth books in German-speaking regions. 85% of the products are manufactured in Europe and sold worldwide from there. The Ravensburger publishing house was founded in 1883. A year later, in 1884, the Ravensburger game publishing company was established. It celebrated its first milestone with the bestseller "memory." Since 2009, the company has also focused on new technologies with the founding of the subsidiary Ravensburger Digital GmbH. It combines the classic gaming world with intelligent electronics, enabling interactive learning.