For the release of the Nike ZoomX Ultrafly, we wanted to do something special. Back in 2017, Nike released the 4% and completely changed the road racing game. Now, they're unleashing all of their wizardry on the trail game with the Ultrafly and they enlisted the best in the business to pull it off. The shoe features ZoomX wrapped in a textile to prevent damage from rocks, carbon fiber embedded within the midsole, and the most technical outsole producer in the world, Vibram, made the magic grip. Friends from Nike, Team Vibram, and Heartbreakers gathered to test them out on a technical section of the Skyline trail. Check out the photos by Fidelis (@fidel.is.cool) HERE.