Aside from its updated name, the marathon-dominating Nike Zoom Vaporfly 4% has been revamped from toe to heel to incorporate key feedback from Nike’s world champion runners.

Its second iteration dazzles with an improved upper (largely thanks to athletes including Shalane Flanagan who gave feedback after water weighed her down in Boston), a re-tooled midsole (a Nike Sport Research Lab solution that combined feedback from many of Nike’s elites) and a redesigned traction pattern (this was a major ask from Eliud Kipchoge after he ran a very wet race in Berlin).

“This shoe is truly the result of our athletes, sport scientists, engineers and designers closely collaborating throughout the entire process of design, testing and manufacturing,” says Brett Holts, Nike VP of Running Footwear. “We are all so excited to see the NEXT% continue to push the limits of human performance on marathon courses around the world.”