Especially ideal for people who try to bite their nails, smoke, shake legs and all types of attention disorders. The arc-shaped design accords with ergonomics, feels comfortable and can be used for a long time. A good choice to kill time, very suitable for adults and children with anxiety and autism. Puzzles exercise the left and right sides of the brain simultaneously, they are a mental workout that improves problem-solving skills and attention span. Doing puzzles reinforces connections between brain cells, and improves mental speed. Our puzzle ball fidget toy comes in different charming colors and attractive shapes, helps your friends and family at home, work to lessen their depression. It can also alleviate children's irritability, it is an ideal gift for children, relatives and friends.