AMERICA'S #1 SELLING BALL: The product of 100 years worth of testing and perfecting; Penn Championship is the best selling tennis ball in America. | PENN PERFORMANCE: Controlled fiber release provides perfectly even nap, while natural rubber offers consistent feel and reduced shock. The Championship line provides unparalleled consistency every time you hit the court. | ALL COURTS: While regular duty tennis balls are best suited for soft, clay courts, they can also be played on all indoor and outdoor hard court surfaces as well. | OFFICIAL BALL: Penn Championship is the Official Ball of USTA Leagues, so you know you're playing with high quality and consistent ball. Available in extra-duty felt, regular duty felt, or extra-duty high altitude felt. USTA and ITF approved. | LASTING DURABILITY: Interlocked wool fiber ensures the all courts tennis balls will play like new for as long as possible.

Penn Championship tennis balls represent the standard by which all other tennis balls are measured with consistent feel and playability every time you step onto the court.