Ravensburger: GraviTrax Obstacle Course Set - Marble Run and STEM Toy for Boys and Girls Age 8 and Up
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GRAVITRAX: The popular STEM toy for boys and girls ages 8 and up - over 6 million sold worldwide
WHAT YOU GET: GraviTrax Obstacle Course Set comes with 153 pieces - all elements in the GraviTrax Starter Set, plus 5 additional expansions including the Trampoline, Transfer, Spiral, Zipline and Bridges.
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