The Wilson Starter plus orange balls are suitable for tennis players aged 9-10. Designed for juniors these low compression balls are 50% slower than a normal tennis ball.

12 ball bag

 

Orange Balls are at 50% compression of the standard Yellow Ball and are designed for players aged 7-9 yrs old.

These balls are designed to land within the hitting zone (roughly waist height) for players in this age bracket

Orange balls are the same size as a standard tennis ball and are used on a standard tennis court with modified base lines