SpiroKu isn't your ordinary stack-and-nest toy. Its oddly-shaped cylinders can be stacked and arranged however you like. The bright colors are eye - catching, and the unique shapes spark your imagination. When you nest the cylinders and pull on the smallest one, it magically stretches into a 22 - inch tall, spiraling tower! This beautifully counter - intuitive design offers hours of hands - on exploration. Each set includes 9 cylinders from big to small, with the largest about 4 inches in diameter. Made of high - quality, BPA - free ABS plastic, SpiroKu promotes fine motor skills, spatial reasoning, experimentation, and creativity. Stack and arrange these cylinders creatively and experience the magic for yourself!

Using SpiroKu is super easy! First, take the 9 cylinders and stack and arrange them in any way you can think of. You can be as creative as you want, letting your imagination run wild. Once you've stacked them, nest all the cylinders together. Then, gently grab the smallest cylinder and pull it up. Watch in amazement as the whole thing stretches into a tall, spiraling tower. To keep your SpiroKu in great shape, just wipe it down with a soft, damp cloth if it gets dirty. Keep it away from sharp objects that could scratch or damage the high - quality ABS plastic. Also, don't expose it to extreme temperatures. And most importantly, have fun exploring all the different ways to stack and stretch your SpiroKu!