An unreleased prototype pair of Nike trail running shoes that made the podium at Transgrancanaria last week have set tongues ...

Releasing March 14, the Nike Vaporfly 4 could be the fastest in the franchise. But is it running its own race?

ACG is known for vintage reissues and urban sneakers. However, an unreleased prototype suggests a performance-oriented pivot in the works.

Photo by Brian Galdamez for Gear Patrol The prototype was first spotted on the feet of American ... upper reveal ACG branding — a first not just the Ultrafly but Nike’s super-shoe lineup as a whole.

Both independent and Nike-sponsored studies have confirmed ... in November 2017 and reached the same conclusion: "The prototype shoes lowered the energetic cost of running by 4% on average ...

Modern competitive running entered a new era in 2016, when Nike began distributing a prototype trainer to elite runners. The new shoes were designed to look like Nike’s top publicly available ...