The Wilson US Open Green Tournament Transition Tennis Ball Case includes 72 tennis balls engineered for competitive 10-and-under play, the US Open Green Tournament Ball is ideal for developing juniors who prefer a slower ball with less bounce. Easier to hit than a regular tennis ball, this green tournament ball maximizes capacity for growth and improvement on a variety of tennis strokes. Recommended for juniors and beginner adults using rackets between 25’ and 27’ in length. Features: 72 balls with 3 balls per can; 24 cans per case Slightly slower and easier to hit than regular tennis balls Perfect for competitive play for developing juniors and beginner adults on full size courts Often used with 25’ - 27’ racketsThe Wilson US Open Green Tournament Transition Tennis Ball Case ins recommended for juniors and beginner adults using rackets between 25’ and 27’ in length.