Grip the Forever Up-Down toy with both hands and practice turning it in the inward and outward directions repeatedly. The object is to control the ball without dropping it. During the warm-up activity discuss with the children why the balls keep turning repetitively along the track. This activity improves hand-eye coordination as well as hand muscle control. It enhances one's reflexes and concentration. This activity is suitable for everyone. The balls are made of two different materials to provide different speeds and challenge levels. Dimensions: 5.91" x 5.91" x 11.81". Ages: 4 years & up.