Let kids experience gravity in a fun way with the GraviTrax Tunnel Track Building Set!

GraviTrax is an interactive track system where children can build their own marble runs, while experimenting with gravity, magnetism, and kinetics.

The GraviTrax Tunnel Track extends your marble's run by combining the rails and floor plates with tunnels to make better combinations and construct more complex systems.

GraviTrax Starter-Set is required.

GraviTrax was chosen as one of the best products in the 2018 New York Toy Fair.

Recommended for ages 8