Improve reaction time Train hand-eye coordination Made of high-density rubber Improve your reaction time and first step quickness. This wonderful, small device is perfect for developing balance and hand-eye coordination. Use alone or in small groups. Made of high-density rubber, ball can be bounced off any hard surface. To increase difficulty, add the smaller ball. Reaction Ball Small. Color: Blue. Dimensions: 1.5" diameter. Wt. 1 lb.
