These high-performance tennis balls are covered in Long Play® Felt to withstand extended wear

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16mm Core thickness

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ASICS GT-4000 4 Men's Black/Amber Size:9.5 These high-performance tennis balls areMeet one of the most supportive shoes in the ASICS lineup. Featuring a softer and smoother design, the ASICS GT 4000 4 helps overpronators find their stride. Enjoy the best of both worlds with the ultra light FF BLAST midsole and supportive LITETRUSS technology. Perfect for runners who don't want to sacrifice comfort for support, the ASICS GT 4000 4 is an overpronator's dream! What's New? FF BLAST cushioning and PureGEL technology provide a more