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Penn Championship Tennis Balls, 20-pack
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Features:
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Extra Duty for use on hard courts
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Regular Duty for use on soft courts
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High Altitude for use on surfaces over 3,500 feet of elevation
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Official Ball of USTA League Tennis
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The standard by which all other tennis balls are measured
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Controlled fiber release for consistent nap
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Natural rubber for consistent feel and reduced shock
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Interlocked wool fiber for longer wear
- Deep-elastic seams for reduced cracking
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