Wilson Triniti tennis balls feature a unique plastomer core that extends the play-feel of a fresh ball, while STR Felt provides improved durability and is 50% more flexible than a standard ball. This combination of a new core material and flexible felt allows Triniti tennis balls to maintain enough bounce to exist outside of a pressurized can. Speaking of the can: Triniti tennis balls come in a unique octagonal paper container that is fully recyclable after use!
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