The Vaporfly 4 is a mile-eating machine that just got lighter and brighter. We trimmed weight with a carbon fiber Flyplate and ultraresponsive ZoomX foam midsole to give you race-day speed without sacrificing performance. The result is a fine-tuned racing shoe thata (TM)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 thanks to a slight midsole reduction, giving you a bouncy, feathery feel. Less Weight:Engineered mesh on the upper offers improved lightweight comfort while supplying a more consistent fit. We reduced the size of the heel and tongue to save even more weight. Lighter Feel:The midsole bulge at the heel helps reduce weight on the inside of the foot and give you a more stable ride. We also used a thinner rubber compared to the Vaporfly 3 to reduce outsole weight without sacrificing reliability. What's New?: Lighter upper, midsole and outsole. Higher plate angle. Lower heel-to-toe drop Product Details:Weight:Approx. 152 g/5.4 oz (Women's US 8). Heel-to-toe drop:6 mm. Style: IO9560; Color: Dark Obsidian/Purple Dynasty/Flash Crimson/Black; Size: 5.5; Gender: Female; Age Group: Adult | Nike Vaporfly 4 Glam Women's Road Racing Shoes in Blue, Size: 5.5 | IO9560-400