This new updated of the Nike Zoom VaporFly 4% utilizes Flyknit in the construction of the upper which results in a lighter, and more breathable ride. Although the construction of the upper has changed, the revolutionary technology that is the hallmark of the 4% system remains the same. Created in conjunction with Breaking2, the Nike Zoom Vaporfly 4% was designed with the goal of helping the world’s fastest marathoners run their best. It’ll also come equipped with the models signature Nike ZoomX foam cushioned sole.