With the Next%, Nike has effectively designed that study itself. The new Vaporfly might sport new materials, better traction, Nike Air Huarache Damen and an updated look, but when it came time to tune the engine of the shoe—the foam-plate system—Nike changed only one variable. Every so often, a technology comes along that transforms the way athletes compete. In the 1970s, composite Nike Air Max 97 Damen tennis racquets larger and lighter than their wooden predecessors empowered players to hit balls faster and with more spin. In 2008, Speedo introduced a full-body swimsuit that dramatically reduced drag in the water, enabling swimmers wearing the Nike Air VaporMax Damen new suits at the Beijing Olympics to dominate the Summer Games and break dozens of world records.Composite racquets were permitted to remain in use. Within a decade they had become the norm among tennis pros, forever altering the dynamics of the game. Conversely, following the Beijing Olympics, it took less than a year for the International Swimming Nike Air Max 2017 Womens Federation to ban full-length speedsuits from competition. Last year, a spokesperson for the International Association of Athletics Federations told The New York Times it had yet to be convinced that the Vaporflys should not be allowed in races. Nike Air Max 90 Femme Perhaps the Next% will make a more compelling case. Especially if other shoe companies are unable to compete with products of their own, the IAAF may soon face its own decision over the future of running. But not before Kipchoge laces up the latest Nike Air VaporMax Femme pair of Vaporflys for Sunday's race in London.The cabling system for the power laces went through 50 iterations alone, along with trialing the sneaker against extreme temperatures, body weight, and water damage. “Every time we iterated we tested it—both from a fit test and some from a wear test,” Klein said.“What a butterfly is doing throughout its Nike Air Max 97 Femme life cycle is adapting and changing, but we also want a level deeper. There's a sort of enchantment that happens with an insect like that, and what we wanted to do was not show everything off in the shoe, but be subtle about it and make you feel Nike Air Max 95 Femme and hear the difference of the shoe.” Designers even pay a nod to the butterfly on the pivot point of the outsole.“Dots are a very humanizing factor and it’s very connected to the eyes. In terms of adaptability and transition, we use those dots as a Nike Air Max 97 Womens moment to carry around the shoe and that's what came to fill out the rest of the Swoosh—four dots that represent something secretive.”“We kept it all in our house. We controlled it in our environment and had athletes come to us,” Klein said about keeping the sneaker from leaking before the official unveil. Pro weartesters like Jayson Tatum and Kyle Nike Air Max TN Damen Kuzma didn’t even know what they were trialing until they got to Nike campus.“We went through about two and a half years of testing and developing on this material alone. And I'll tell ya, it's a woven and anyone who knows anything about wovens, Nike Air Max 97 Mujer the conformity and sensation of this is unlike any woven we've had or have been able to build. The reason why is because this is super soft, very conforming, very light weight, open and breathable, and has multi axises of containment.”