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Although Nike has created partially 3D printed shoes for professional athletes and collaborated with 3D printing companies for footwear solutions before, this is their first shoe with a 3D printed upper – in fact, it’s the first piece of performance footwear with a 3D printed textile upper anywhere. The company had been experimenting with a 3D printed upper, so they brought that out and applied it to the Vaporfly Elite, developing a new shoe called the Nike Flyprint. Otherwise, Kipchoge said, the shoes were perfect, so Nike decided to keep the tooling of the Vaporfly Elite and work on improving the upper so it wouldn’t absorb water. Though he was wearing specialized running shoes, Nike Zoom Vaporfly Elites, they were no match for the wet conditions, and the water his shoes soaked up added extra weight, slowing him down. The conditions were far from ideal, with heavy rain and 99 percent humidity, and while Kipchoge came in first place, he didn’t break the record. In Berlin in September 2017, runner Eliud Kipchoge attempted to break his own world record for fastest marathon ever.
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