Penn Championship Regular-Duty Pressurized Felt Tennis Balls

- Top Seller: Developed through more than a century of testing and refinement, the Penn Championship is the nation's top-selling tennis ball. - Performance: Controlled fiber release creates a uniform nap while the natural rubber core provides consistent feel and reduced impact shock. - Court Suitability: Regular-duty felt is optimized for softer clay courts but is also suitable for play on indoor and outdoor hard surfaces. - Official Approval: Designated as the official ball of USTA Leagues; available in regular-duty, extra-duty, and extra-duty high-altitude felt variants, and approved by USTA and ITF. - Durability: Interlocked wool fibers extend play life so the balls retain a near-new performance for as long as possible.