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Penn Pro Penn Marathon (High Altitude)
Penn Pro Penn Marathon (High Altitude) is best for hard court and turf, players who want a lively ball, frequent play (it lasts).
Facts
Brand
Penn
Model
Pro Penn Marathon
Duty
High Altitude
Type
Pressurized
Built for
hard court, turf
Tier
Premium
ITF approved
Yes
Price
$5.99 ($114.95 / 24-can case)
Available
US
What to know
High-altitude build of the Marathon extra duty for play above ~4,000 ft - the premium durable option for Denver-area and mountain-state hard courts. Reduced internal pressure normalizes bounce in thin air.
- Holds up well — fewer cans over a season
- Lively off the strings
- Stays playable for about 3 weeks before it goes flat
When to open a fresh can
About every 3 weeks of regular play, if you want consistent bounce — this ball's pressure fades gradually like any pressurized ball.
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