National Geographic Glowing Marble Run - 150 Piece Construction Set with 30 Glow in the Dark Glass Marbles, Mesh Storage Bag, Great Creative STEM Toy for Girls and Boys

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 9 sturdy bases, 26 exciting action pieces, and 85 clear smooth-run tube pieces, our kit has countless imaginative configurations. GLOW-IN-THE-DARK MARBLES - This marble run kit includes 30 glow in the dark glass marbles in 6 colors! Kids will love watching them glow as they zig-zag down their custom tracks! CONVENIENT STORAGE - A storage bag and marble pouch makes it easy to store 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 gravity. It also includes marble run construction experiments! AMAZON EXCLUSIVE - Blue Marble has developed this product exclusively for Amazon. AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a U.S. support team to ensure a stellar experience!