The Vector® ball teaches players as young as t-ball to watch the ball hit the bat.
You cannot teach hitting with "words", young ball players learn by seeing and doing. The Vector® ball is vision training without words.
The Vector® ball trains ballplayers' eyes to hit the ball square, with the sweet-spot of bat, at the apex of swing.
The most effective way to hit a baseball as hard as you can is to focus your eyes as hard as you can.
If you are seeing the ball you are focused and ready for success.