I got this because my son has ADHD and a mild form of autism and needs to be doing something with his hands at all times and when I seen this I wanted to give it a try. Each circle area has small ball bearings in which it makes it spin and keeps your concentration on the toy and the fidgeting to a minimal. It helps direct concentration on it and away from bad habits like nail biting, smoking and helps keep a person stress free. It is such a small simple toy but it does so much for so many people.
I received a promotional discount on this product for testing purposes but I am under no obligation to write a review. The choice was purely my own and received No additional compensation. Should you have any questions please feel free to ask me.