Tecnifibre X-One Biphase (Red) Size:1.30 They bounce 75% lower than

They bounce 75% lower than a standard tennis ball

Keep your tennis gear safe and organized in the Babolat Pure Strike Backpack

vertical swing path

With less dust and mess and a formula that’s shown to kill germs

Slower swing enhances touch and power

Tecnifibre X-One Biphase (Red) Size:1.30 They bounce 75% lower thanX One Biphase is Tecnifibre's premium string. It is designed to take playability and durability to a new level by providing ultimate performance of power and feel, while extending string life by 20% and offering increased spin. X one Biphase joins together H2C (High Heat Capacity) and NRG microfilaments to acquire this high power and dynamic response. X One benefits from a process (trimerization), which bonds polyurethane to protect against wear and