• Construct exciting marble runs with this 35 piece set. • Build imaginative models with glowing starter tops then turn off the lights and watch the marbles glow as they travel through the transparent pieces. • The see-through pieces disappear in the dark and the glowing marbles look as if they are flying through the air. • Includes full colour guide. Construct exciting glow-in-the-dark marble runs using transparent coloured pieces and glow-in-the-dark marbles. Watch the marbles as they travel down the see-through chutes and tubes and swirl around the vortex. Turn off the lights, place the marbles in the glow-in-the-dark starter tops and the glowing marbles look as if they are flying through the air as the marble run has disappeared in the dark! Additional details: Packaging size: 350mm x 240mm x 75mm Recommended age: 4+