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 official ball of PTR because of its guaranteed longevity, durability and visibility. This is the Pro Penn Marathon Regular Duty for indoor and clay courts. Penn’s Professional tennis balls are the most technologically advanced tennis ball providing players with top of the line core and felt technologies that allow the ball to play at its best for longer periods of time.

• 3 balls per can
• Regular Duty felt for indoor or clay courts