Overview
- Nike formally launched the Alphafly 4 this week with an early, limited online release that began on September 17 and a broader rollout set for October 29.
- The company set the U.S. retail price at $280 and will sell the shoe through nike.com and select retailers during the wider October release.
- Nike claims the Alphafly 4 delivers 10 percent more energy return than the previous model and is 5 percent lighter in a men’s size 8.5.
- Key technical changes include ZoomX LT foam that Nike says is up to 17 percent lighter and gives 8 percent more energy return, an Atomknit upper, dual forefoot Air Zoom units, a carbon-fibre Flyplate, and a Fast Shot outsole.
- Nike says years of athlete testing, women’s trials and Sport Research Lab studies shaped the design, which the company positions for elite marathoners and recreational runners aiming for faster race-day performance.