LONDON (Reuters) - Nike said the Alphafly shoe worn by Eliud Kipchoge to break the two-hour marathon barrier would be legal under World Athletics' new rules and that widespread reports of its shoes containing triple carbon plates are false.
On Wednesday Nike Inc launched a new version of the shoe that complies with rules introduced by the governing body last week to limit carbon plate usage and sole thickness for elite races following concerns that technological developments were giving runners an unnatural advantage.