The Vaporfly 4 is a mile-eating machine that just got lighter and brighter. We trimmed weight all over from the previous iteration without sacrificing performance. And the carbon fiber Flyplate and ultraresponsive ZoomX foam midsole combine to give you race-day speed. The result is a more fine-tuned racing shoe that’s trusted from the mile to the marathon. Full Speed The full-length carbon fiber Flyplate has a higher angle than the Vaporfly 3 and combines with a lower heel-to-toe drop to give you a propulsive feel on race day. Lighter Foam Nike ZoomX, our most responsive foam, just got lighter. Running from heel to toe, it unlocks even more energy return than before with a slight midsole reduction, giving you a bouncy, feathery feel. Lighter Upper Engineered mesh helps reduce the weight of the shoe while providing a more consistent fit. And we saved more weight by reducing the size of the heel and tongue. Lighter Midsole and Outsole Midsole bulges at the heel to help reduce weight on the inside of the foot to give you a more stable ride. We reduced the weight of the outsole by using a thinner rubber compared to the Vaporfly 3. What's New? Lighter upper, midsole and outsole Higher plate angle Lower heel-to-toe drop