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.<br /><b>Lighter Foam</b><br />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.<br /><b>Lighter Upper</b><br />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.<br /><b>Lighter Midsole and Outsole</b><br />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.<br /><b>What's New About the Vaporfly 4?</b><br />We made minor tweaks so you can enjoy major gains. We trimmed inessential weight in the upper, midsole and outsole without sacrificing performance.<br /><br /><b> More Details </b><br><br><ul><li>Weight: Approx. 152g/5.4oz (Women's US 8)</li><br><br><li>Heel-to-toe drop: 6mm</li><br><br></ul>