National Geographic Glow-in-the-Dark Marble Run - 50 Piece

National Geographic Glow-in-the-Dark Marble Run - 50 Piece - The National Geographic Glow in the Dark Marble Run is a phenomenal construction activity kit for kids! This 50-piece set has everything you need to create incredible marble runs that will have your glowing marbles racing toward the finish line! Configure the pieces in any design you'd like - the possibilities are endless! The detailed learning guide has lots of information about the physics of motion and gravity, so you can learn while you play! And when you're all done, a convenient mesh storage bag is included so you can keep all your marble run pieces stored together.National Geographic Toys makes the highest quality hands-on science toys, and all products are backed by exceptional service.