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STURDY TIGHT-FIT PIECES – This construction kit is designed to fit together snuggly so your marble maze won’t fall apart while you play. With more than 20 exciting action pieces and 45 clear smooth-run track pieces, our kit has countless imaginative configurations
GLOW-IN-THE-DARK MARBLES – The marble run kit includes 5 different colors of glow-in-the-dark glass marbles that shine bright as they zig-zag down the marble run. Also Includes UV light to quickly recharge the marbles
CONVENIENT STORAGE – A mesh bag and marble pouch makes it easy to store all your marble run construction pieces and glow-in-the-dark marbles in one place
GREAT STEM TOY – The learning guide inside teaches about the physics of motion and aerodynamics. It also includes marble run construction experiments
RESPECTED QUALITY – Providing children with the best educational STEM toys, this kit comes with National Geographic’s 100% satisfaction guarantee