Description
[Gravitrax: Color Swap] Abracadabra, presto, chango — your marble run just added some colorful, magical fun with the “GraviTrax Color Swap” accessory!
[INNOVATIVE] The GraviTrax interactive track system allows you to design and build your own race tracks and experiment with gravity, magnetism, kinetics
[STEM TOY] Boys and girls ages 8 and up can experience educational and science play. The franchise has sold over 15.5 million units worldwide and has ranked as the No.1 marble run system in the U.S., according to the NPD Group.
[COMPATIBLE] Easily extend play time – All sets are compatible and functional with all GraviTrax systems
[GREAT GIFT] GraviTrax is an a ideal holiday and birthday gift for creative, curious kids and adults who love to build.
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