Interactive marble run system. Recommended for ages 3 and up. Number of pieces: 33. Made of plastic. Includes everything needed to build individual tracks through the jungle world. Motor skills and spatial thinking are enhanced through the free design of the marble runs. GraviTrax Junior allows children aged 3 and up to have a child-friendly introduction to themed marble run worlds. Boys and girls can create their own marble run worlds, which can be flexibly decorated to create individual 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 the German-speaking region. 85% of the products are manufactured in Europe and are sold worldwide from there. The Ravensburger publishing house was founded in 1883. A year later, in 1884, the Ravensburger game publishing house was established. It celebrated its first milestone with the best-selling game "memory." Since 2009, the company has also focused on new technologies with the establishment of its subsidiary Ravensburger Digital GmbH. It connects the classic gaming world with intelligent electronics, enabling interactive learning.