The Nike Vaporfly shoe captured the spotlight in October when Eliud Kipchoge broke the two-hour marathon barrier wearing a pair, and various versions of it have featured in other record-smashing runs since. “It’s hard to argue that they do not provide an advantage just because of the 500 women who are running, 480 are going to be wearing Vaporflys,” said Kellyn Taylor, a marathoner sponsored by HOKA ONE ONE who ...