- Extensions can be combined with all Junior Starter Sets - Theme sets include cute decorative elements and animal figures for decoration - Ideal extensions for children aged 3 and up, with many components GraviTrax Junior is suitable for children aged 3 and up. Boys and girls build their own marble run worlds, which can be freely supplemented with decorations to create their own themed worlds. With a large number of desert elements and animal figures, children experience the world of the desert up close. All construction and decorative elements are made of wood-bioplastic. Building and playing fun are combined in a unique way! GraviTrax Junior is an interactive marble run system for children aged 3 and up. Children build their own marble run world to their heart's content and can decorate it with all sorts of different theme sets. Creative building and playing fun are combined. - Extensions can be combined with all Junior Starter Sets - Theme sets include cute decorative elements and animal figures for decoration - Ideal extensions for children aged 3 and up, with many components GraviTrax Junior is suitable for children aged 3 and up. Boys and girls build their own marble run worlds, which can be freely supplemented with decorations to create their own themed worlds. With a large number of desert elements and animal figures, children experience the world of the desert up close. All construction and decorative elements are made of wood-bioplastic. Building and playing fun are combined in a unique way! GraviTrax Junior is an interactive marble run system for children aged 3 and up. Children build their own marble run world to their heart's content and can decorate it with all sorts of different theme sets. Creative building and playing fun are combined. Contents 33 parts: 1 base plate, 2 balls, 8 large curves, 9 decorative elements, 4 cardboard animals, 3 open base blocks, 6 decoration caps, 1 instruction manual Age 3-7 years