Encore core technology extends ball lifespan for fewer replacements
Longplay felt construction allows for extended play sessions
Smart Optik felt enhances visibility for better tracking
Official ball of PTR and US Tennis Association for competitive use
High tenacity felt resists wear and tear on hard courts
Summarized by Shop
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. Pro Penn Marathon is available in Extra-Duty Felt (fo