I first paid attention to the Nike Vaporfly 4% Flyknit shoes when marathoners Geoffrey Kamworor and Eliud Kipchoge wore them and won the 2019 New York City Marathon — the shoes' name refers to Nike's claim they can boost speed by up to four percent. I’ve been recommending fitness products and exercises for years, from what trainers keep in their gym bags to the most common running mistakes, so I keep an eye out for cases like these. And the Vaporflys' exceptional construction — and controversial nature — have kept them in the spotlight since. In fact, 31 of the 36 top finishers at the six biggest 2019 marathons in the world wore Vaporflys, NBC News reported last week.To buy more [url=https://www.shoesshox.com/]cheap nike free running shoes[/url] with cheap price, you can visit shoesshox.com official website.

The Vaporfly Flyknits are so seemingly effective that international track and field governing body World Athletics considered banning them from certain competitions. The recent deliberation came following a months-long investigation into whether Vaporflys violated a rule dictating shoes used in races must be "reasonably available" to all runners and cannot provide "any unfair assistance or advantage.” Ultimately, the Vaporflys avoided a global ban when World Athletics ruled Jan. 31 to allow them, but not without noting “concerns” that recent shoe technology poses a threat to “the integrity of the sport.”

“Friday's international ruling means athletes will be allowed to race in Vaporflys at this year’s Summer Olympics,” NBC News reported. “However, the new rules also effectively tamped down any hope that competitive brands could offer their own design for the Olympic Games.” (NBC News will be broadcasting the Summer Olympics from Tokyo.) Nike — which calls the Vaporflys "the fastest shoe we've ever made” — disagrees that they provide an unfair advantage. Regardless, the technology in the shoes might be worth a closer look.
I asked podiatrist Dr. Velimir Petkov, DMP, what he made of the shoes. He works with patients — runners among them — who’ve specifically asked him to assess the Vaporflys. He first came across the shoes when a "running enthusiast in his mid-30s" brought them in, seeking an "honest opinion about them," Petkov tells me. He finds the shoe is great for distance runners for several reasons and noted a few concerns he thinks are important to keep in mind.

“I like the wider toe area, which allows for better comfort in people with wider feet," Petkov says. "It also allows extra room for natural swelling of the feet, which usually occurs during prolonged periods of exercise or running. It’s a big plus for runners who engage in half and full marathons.”