Let their creativity shine with our Large Blocks Marble Run Building Set featuring LED Lights. LED-Lit Tracks: Features LED lights that illuminate the marble run tracks for a mesmerizing visual experience. Easy Assembly: Large blocks and simple connections make it easy for young children to build and customize their marble runs. Educational Benefits: Encourages problem-solving, spatial reasoning, and fine motor skills through hands-on play. Versatile Play: Provides hours of entertainment as kids experiment with different track designs and marble routes.