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
