Description
[GraviTrax PRO: Vertical Expansion] Take your marble run higher and higher with the “GraviTrax PRO Expansion” set! This set includes 33 pieces to assist build your marble run.
[INNOVATIVE] The GraviTrax interactive track system means that you can design and build your individual race tracks and experiment with gravity, magnetism, kinetics.
[STEM TOY] Girls and boys ages 8 and up can enjoy educational and science play. The franchise has sold over 15.5 million units all over the world and has ranked as the No.1 marble run system within the U.S., in line with the NPD Group.
[COMPATIBLE] Easily extend play time – All sets have compatibility and functional with all GraviTrax systems.
[GREAT GIFT] GraviTrax is an a ideal holiday and birthday gift for creative, curious kids and adults who like to build.
