Let your imagination run wild with this STEM focused creative fort building kit.  Now kids can build forts in any shape and size they can imagine -- build endless play tent structures, fort for kids, play tunnels and more with 86 connecting rods and 44 multilink spheres.  Build and imagine while mastering basic engineering skills; fort builder kit includes a building guide to ignite your creativity.  Easily build giant kids' forts indoors and outdoors by inserting and twisting the rods into the spheres; make a kids' play tent by adding a lightweight sheet for the roof.  This toy is Non-Toxic, BPA-safe and lead-safe.