The Nike Vaporfly 4% has been updated, and its newest version appears to be what Eliud Kipchoge wore this morning during his world record run.

Nike’s newest Vaporfly has been made lighter and more breathable by incorporating a Flyknit top. The one-piece knit upper seamlessly hugs the foot. 

Photo: Nike.

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Nothing has changed about the bottom of the shoe. The carbon-fiber plate and Zoom-X foam, which is capable of providing up to 85 percent energy return, remains underfoot. Why mess with a good thing?

The upper however, is entirely different and designed to comfortably hug the foot. World record holder Kipchoge has called the 4% system, “perfect…. really perfect.”

Kipchoge ran a beautiful race on Sunday morning. He cross the line in 2:01:39, negative splitting his record. His first 21.1K was run in 61:06, and his second half in 60:33. 

RELATED: Finishing times had the world’s top marathoners not worn the Nike Vaporfly 4%

Kipchoge gave feedback on the initial prototype of the 4% system a year and a half ago. Top athletes challenged Nike to rethink the racing flat – so they did. Almost 18 months later, the Vaporfly 4% has become a phenomenon and something that many believe has completely change the running game. 

The shoe becomes available in North America on October 4th leading up to the Chicago Marathon and retails for $250 USD. 

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