marble run for toddlers, you can assemble different runs by joining the parts in various ways.the large rattle spheres and the easy, intuitive junctions are designed for toddlers, 18 months plus.the marbles roll purposefully slowly along the tracks, prolonging the magic to the full and increasing the child's surprise.milonga junior was selected by the adi (industrial design association) and nominated for the compasso d'oro 2018 (golden compass award).safely made in italy Age 18 Months +