Ravensburger GraviTrax Extension Vertical Pro

- GRAVITRAX: The popular STEM toy for boys and girls ages 8 and up - over 6 million sold worldwide
- WHAT YOU GET: GraviTrax PRO Vertical Expansion Set comes with 33 pieces - includes height stone towers, balconies, and walls to expand your marble run creations
- BUILD HIGHER: Use the height tile towers, balconies, walls and high-speed tracks to take your tracks to new heights
- INNOVATIVE: The GraviTrax interactive track system allows you to design and build your own race tracks and experiment with gravity, magnetism, and kinetics to propel your marbles to the finish
- CLEAR INSTRUCTIONS: Comes with clear instructions so that you can start building and playing within minutes