ULTIMATE KIDS FORT BUILDING KIT: Build endless play tent structures, forts for kids, play tunnels and more with this construction fort set that includes 53 connecting rods and 28 multilink spheres ENDLESS FORT BUILDING DESIGNS: Create giant kids forts indoors and outdoors by inserting and twisting the rods into the spheres (adult supervision is advised); make a kids play tent by adding a light sheet for the roof STEM LEARNING TOYS FOR KIDS: Build and imagine while mastering basic engineering skills; this construction fort building kit includes a building guide to ignite creativity; make a kids play tent by adding a light sheet for the roof KID-FRIENDLY CONSTRUCTION TOYS SET: This kids play fort kit is made with kid-safe, BPA-free plastic; includes 15.75” rods and 2.4” balls; these construction fort building toys are perfect for curious-minded kids ages 4 and up FUN YOU CAN COUNT ON: Spark creativity with our Fun Forts building kit that allows kids to build their own fort playhouses alone or with siblings and friends; this fort-making kit for kids is designed for happy building