Media playback is not supported on this device What's the deal with the controversial Nike Vaporfly trainers? Nike has launched a mass market version of its controversial Alphafly prototype shoe that it says complies with new World Athletics rules. But Nike said the retail version of the Zoom Alphafly Next%, set to go on sale this summer, will do. "We are pleased the Nike Zoom Vaporfly series and Nike Zoom Alphafly Next% remain legal," said Nike in a statement. On Wednesday, Nike also launched a new Viperfly sprint shoe designed for the 100m that does not meet World Athletics' new restrictions.

Source: BBC February 05, 2020 21:24 UTC