Nike Womens Vaporfly 4. The Vaporfly 4 Is A Mile-Eating Machine That Just Got Lighter. Nike 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. This Product Is Not Eligible For Discount. Style Code: Hf6412-400 The Finer Details. 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. Nike Zoomx, Nike's 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. Engineered Mesh Helps Reduce The Weight Of The Shoe While Providing A More Consistent Fit. And Nike Saved More Weight By Reducing The Size Of The Heel And Tongue. Midsole Bulges