The Pro Penn Marathon is Penn's longest lasting tennis ball. Features Encore Technology for 22% longer lasting core, high tenacity LongPlay felt for extended play, and Smart Optik felt for optimum visibility. Pro Penn Marathon balls are the choice of PTR pros due to its durability, longevity, and visibility. Convenient case for frequent players.
- 3 Ball in a tin
- 72 balls per case
- Extra Duty
- Colour: Yellow
- United States Tennis Association Approved
- International Tennis Federation Approved