NIKE WOMEN'S ALPHAFLY 4

TECH TIP: New foam, new Air Zoom, same podium energy, just 10% lighter about it.GURU TIP: Nike went back to the lab for the Alphafly 4 and came back with the best gets better. The new Racing ZoomX foam up top is 25% lighter and softer with more energy return, riding on that same proven ZoomX base below, while the redesigned Air Zoom unit drops 30% of its weight without losing any bounce. All together this one comes in about 10% lighter than the Alphafly 3, still on that same 8mm offset with a wide, connected base for a smoother, more stable ride mile after mile. The Atomknit upper picks up more breathability and extra midfoot security with zoned cables and an integrated heel knit, so lockdown stays locked in even when your legs start arguing with you late in the race. Same propulsive scoop plate, same race day magic, just quieter and smoother getting you there.BUY THIS SHOE IF... you're chasing a PR and want every gram, watt, and decibel working in your favor on race day.DON'T BUY THIS SHOE IF... you need something that can handle more than a few hard efforts before it's done. This one's built for racing, not daily miles.