Bring science and hands-on construction play to night-time races with this glow-in-the-dark marble run. The 50-piece kit includes track and action pieces plus eight luminous glass marbles and a UV keychain light to charge their glow. A compact mesh storage bag keeps pieces tidy; the included learning guide offers experiments and setup ideas that teach principles of motion and gravity while encouraging open-ended creativity. Perfect for cooperative builds, competitive races, and STEM play sessions for kids 8 and up.