Nike has unveiled its new Nike Air Pegasus 83 Femme Zoom Vaporfly Next% shoe ahead of Sunday's London Marathon showdown where world record Nike Air Max 97 Femme holder Eliud Kipchoge and four-time Olympic gold medalist Mo Farah Adidas ZX Flux Dámské will race in the shoes.In Nike Air Max 95 Dam] 2017, Nike unveiled the Zoom Vaporfly 4% with a claim that the shoe assisted runners Nike Air Max 2017 Mujer with a 4% Nike Air Max 95 Femme improvement in running economy while compared to the Zoom Streak 6. The shoe was prominently featured as part Adidas ZX Flux Mujer of Nike and Kipchoge's attempt to break the two-hour marathon barrier, where he ended up running 2:00:25 for the 26.2 mile distance. The time did not count as a world record due to Nike's efforts to optimize conditions with alternating pacers and mobile fueling strategy, but Kipchoge officially broke the world record at last year's Berlin Marathon in 2:01:39.

The New York Times conducted its own study using data from fitness app Strava that determined Adidas Superstar Womens runners in the Vaporflys clocked times that were 3 to 4% faster than similar runners in www.verdeypaisaje.es other shoes. It also found that the Vaporflys were more than 1% faster Nike Air Max 720 Femme than the next-best racing Nike Air Max 270 Womens shoe. The Times analyzed results from about 280,000 marathon and 215,000 half marathon Nike Air Max 2017 Dámské performances.At Nike Air Max 2017 Damen first, the Vaporfly 4% were met with controversy since some professional athletes claimed the use of carbonfiber plates in the midsole provided athletes with an unfair advantage. The International Association of Athletics Federation, track and field's governing body, determined the shoes were legal. In recent years, other shoe companies have started testing out prototypes with carbonfiber plates to close the gap on Nike's latest technological advancement.

While some may be quick to dub the shoes as the 5%'s no claim of a 5% running economy Nike Air Presto Womens benefit has been determined. Leaked photos on prototype running shoe Instagram accounts showed www.palmyreroigt.fr models that said "0/5 Measured in the Lab. Verified with Medals and Records." Nike Roshe Run Mujer The controversial Nike Air Presto Dam carbonfiber plate is also in the Next% shoe.The new shoe has 15% more Nike ZoomX foam than its Nike Air Max 2017 Dam previous Nike Air Max 90 Mujer edition but still weighs 6.6 ounces (on a men's size 9 shoe).Vaporweave technology on the upper is lighter than Flyknit material and reportedly absorbs less sweat or water in rainy conditions. This was among the biggest pieces of feedback from elite athletes and the first iteration of the shoe.The shoe will cost $275 and will be available for purchase through the Nike NRC app on April 28. It is expected to hit stores in the summer.