National Geographic Glow in The Dark Marbles Refill – 25 Glass Marbles That Glow in The Dark Includes Storage Pouch & UV Light Marble Runs for Kids Building Toys Science Toys

National Geographic Glow-in-the-Dark Marbles are a fantastic addition to any National Geographic Marble Run set! You receive 25 incredible glass marbles in six different colors and they all glow like galaxies in the dark. There’s also a convenient storage pouch in the kit for your marbles and a UV keychain light to make the marbles glow brighter and longer.