1、The ingenious fortress kit is equipped with 30 connecting balls, 60 rods and 120 connecting buckles，made from rugged and high quality plastic material that is easy to build and durable. By simply inserting and twisting the rods into the ball, builders can connect them in seconds to create a variety of possible play structures for both indoor and outdoor activities. At the same time, can also be easily disassembled, convenient and fast. 2、Building fun fortresses is a great way to improve kids' stem (science, technology, engineering, and math) skills, and kids will concentrate on creating the perfect fortresses, which will undoubtedly also help improve their imagination, problem‑solving skills, and elaborative faculty. 3、Our kids' ultimate fortress building kit is designed for kids ages 3 and up, you can build caves, play tents, fire arrow, houses, igloo, princess castle, tunnels, tents, toy tents, pirate ships and more structures, and just add a cushion to create a paradise. 4、Fun for the whole family, building a big and complex fortress with this luxury bag ，which is challenging and fun for kids and parents. This DIY toy will bring endless fun to your family by building and exploring more building ideas. 5、In the process of playing, children can plan how to solve problems and build ingenious structures that they like. Undoubtedly, this is a perfect birthday, holiday, Christmas, Halloween, New Year's educational toy gift. Item Type: Children's Toys DIY Spelling Tent Castle Material: Plastic Weight: Approx.1733g / 3.8Ib Product Size: Connecting Rod 39cm / 15.4in, Connect Ball 4.6cm / 1.8in, Connection Buckle Length 3.2cm / 1.3in 60 x Connection Rod 30 x Connection Ball 120 x Connection Buckle