Nike's most efficient and fastest marathon shoe to date, the Nike Zoom Vaporfly 4% Unisex Running Shoe provides superior responsiveness through innovative cushioning. Champion runners like Galen Rupp (2:09:20, Chicago) and Edna Kiplagat (2:21:52, Boston) won two of 2017's biggest races in the Nike Zoom Vaporfly 4%. Powerful Response The newly designed, ultralight Nike ZoomX midsole foam delivers our greatest energy return yet to help you meet your ultimate goal. To keep the shoe as light and fast as possible, much of the foam sole is exposed. Because of this, some wear and tear of the foam is normal and expected, though it does not impact the shoe's performance. Propulsive Feel A lightweight, full-length carbon-fibre plate feels like it's propelling you forwards as you get closer to the finish line. Lightweight Support A nearly seamless one-piece Flymesh upper is designed to be more breathable through the top of your foot to help keep it cool from 5km to 26.2.