Memory foam insoles conform to individual foot contours overnight

Nike Vaporfly 4 Women's Road Racing Shoes The Vaporfly 4 is a mile-eating machine that just got lighter. We trimmed weight all over from the previous iteration without sacrificing performance. And the carbon fiber Flyplate and ultra-responsive ZoomX foam midsole combine to give you race-day speed. The result is a more fine-tuned racing shoe thats trusted from the mile to the marathon.

Helps with energy return and conservation