Description: GLOW IN THE DARK FORT BUILDING KIT - Build endless play tent structures, forts, play tunnels and more with this construction fort set that includes 75 glow in the dark connecting rods and 45 multilink spheres. BUILD YOUR OWN FORT - Create giant kids forts by inserting and twisting the rods into the spheres (adult supervision is advised); Children can play indoor and outdoor. Glow in the dark feature needs to be exposed to light prior to activating in the dark. LEARNING TOYS FOR KIDS - Build and imagine while mastering basic engineering skills; this construction fort building kit designed to ignite creativity; make a kids play tent by adding a light sheet for the roof. INSPIRE KIDS ABILITY - Great for cultivating children's imagination, developing eye-hand coordination, training fine motor skills as well as improving color and shape recognition. KIDS TENT CONSTRUCTION TOYS SPECS - This kids play fort kit is made with kid-safe, BPA-free plastic; these construction fort building toys are perfect for curious-minded kids ages 3 and up. Specification: Material: plastic. Ball Diameter: 4.5cm/ 1.77 inch. Rod Length: 38cm/ 14.96 inch. Size Chart: Package Size: 34.5x29x4.3cm/13.58x11.42x1.69inch. Package Includes: 45 Pieces Joint Balls. 75 Pieces Connecting Rods(with tent or not, as you choose) Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.