Pro Penn Marathon Regular Duty
Pro Penn Marathon Regular Duty Tennis Balls
Soft Court. Penn's longest lasting and most technologically advanced tennis ball, featuring exclusive Encore Technology and LongPlay Felt. It is the #1 choice of teaching pros and has been the official ball of the USPTA for over 35 years.
Encore Technology has a unique core compound of natural and man-made polymers to produce a core that limits ball softening. The result is a ball that stays fresher longer and therefore plays like new longer.
LongPlay Felt lasts 25% longer than the original Pro Penn and stays cleaner on court, picking up less dirt and dust. Still features Smart Optik technology for 19% greater visibility.