The Ravensburger GraviTrax Junior My Planet XXL starter set offers a playful introduction to the world of marble runs for children aged 3 to 7. With a total of 200 pieces, it allows you to create a versatile play world that connects different habitats such as the desert, jungle, ocean, and polar world. The child-friendly components can be combined flexibly, promoting motor skills and spatial thinking. Lovingly designed 3D decorative elements and animal figures invite creative role-play. The system is infinitely expandable and allows for ever-new, imaginative constructions.