Description GraviTrax Junior is an interactive marble run system designed for children aged 3 and up. Both girls and boys can create their very own marble run world and decorate the track to their liking. Children can independently build and modify the tracks, and cool components and special stones allow the marbles to perform fun tricks, making the marble run even more exciting. Information Country: CNGross Weight: 1.9 kgWidth: 340.0Height: 110.0Net Weight: 1900.0 kg