Boinks Fidgets™ are great in helping reduce stress. Fidgety fingers slide the marble back and forth in this tight tube of fabric to soothe anxiety and stress in the classroom, theater, airplane, office or anywhere one needs to keep quiet hands.Fidgeting stimulates neural responses to produce an increase in blood circulation in the brain and extremities, so it can ease the symptoms of generalized anxiety disorder, ADD, ADHD, obsessive-compulsive disorder, dementia and autism.Not suitable for children under 36 months due to small parts which may represent a choking hazard.