Description

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Pro Penn Marathon is Penn’s longest lasting tennis ball featuring exclusive Encore Technology for a 22% longer lasting core and high tenacity LongPlay felt for extended play. Pro Penn Marathon is the #1 choice of the USPTA Teaching Pros because of its guaranteed longevity durability and visibility.
Official Ball of the USPTA for over 37 years – longest running endorsement in tennis history.
USTA approved
3 Balls to a Can, 4 Cans to a Pack = 12 Balls Total