11. [2021 upgrade fortress construction kit]: The fortress construction kit includes 87pcs (51 sticks and 36 balls) and 100pcs (64 sticks and 36 balls). The magical fortress building kit allows your children to build castles of all shapes and sizes 22. [Easy to assemble and durable]: The children's building fortress building kit is made of sturdy high-quality plastic, just insert and screw the rod into the ball, the builder can connect in a few seconds, easy to disassemble, and will not deform . It comes with a storage bag, suitable for indoor and outdoor activities. 33. [Luminous version]: Sticks and balls can emit bright light at night, more atmospheric, and there are more star tents to choose from 44. [Inspire creativity and imagination]: The perfect innovative toy, suitable for children 2-3 years old and above. Children work hard to plan and solve problems, build different innovative structures, perfect educational toy gifts, suitable for birthdays, holidays, Christmas, Halloween, and New Year 55. [Fun for boys and girls]: Our kids ultimate fortress building kit is specially designed for children aged 3 and above. It can build caves, game tents, rockets, houses, princess castles, tunnels, tents, toy tents, pirate ships, just add a sheet to create a hiding place.