The GraviTrax Junior Starter Set is an engaging interactive marble track system designed for children aged 3 and up. This set allows kids to build their own unique tracks and enhances their creativity by enabling them to create themed worlds. - **Interactive marble track system** suitable for children 3 years and older. - Encourages creativity as kids build and customize their own marble runs. - **Components made from wooden bioplastics** ensuring durability and safety. - Expandable with additional accessories, starter, or expansion sets. - Can be combined with themed sets to create themed worlds. This starter set is an ideal entry point into the GraviTrax Junior universe, offering endless building fun for both girls and boys.