The Glow in the Dark kit contains balls that glow in the dark for hours when held to the light.
Just add a bed sheet for endless fun!Put the pieces together in different configurations, cover with bed sheets and voila - kids have a unique new play space every time. Ages 5+Fun Tip: the more Crazy Forts kits you have, the bigger the fort can be! "Glow in the Dark Crazy Forts are a unique, award winning, building and creative toy. Each Crazy Fort Kit contains 25 geometrically precise balls that glow in the dark and 44 sticks that connect to create a multitude of possible play structures.