Use the 15 feet of glow-in-the-dark track to construct this 200-piece rollercoaster. With the proper tension, the marble (4 marbles included) will race to the bottom, where the battery-operated elevator will lift it to the top. Each size marble will run at a different speed. Perfect for demonstrating the principles of mechanics and physics. Needs two AA batteries, not included. Made in Italy. For ages 8+.
