Nike threaten assault on 100m records with release of futuristic Viperfly sprint shoe
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Nike threaten assault on 100m records with release of futuristic Viperfly sprint shoe
Cathal Dennehy on Twitter: "Get set for the Vaporfly debate to hit sprinting...the Nike prototype spike that could change the game in 2020. https://t.co/0oyIw8Kdib" / Twitter