The newly introduced Zoom Vaporfly 4% Flyknit sneaker in 'Flash Crimson' is an improved version of Nike's previous fastest marathon footwear, boasting a four percent increase in efficiency. Featuring enhanced lightweight flexibility and breathability, this runner is equipped with ultralight Flyknit mesh that offers stability through a full-length carbon plate and an internal heel design. Additionally, each step is cushioned by the energy-returning ZoomX foam, ensuring a seamless and comfortable running experience. With these advancements, the Zoom Vaporfly 4% Flyknit delivers optimal performance and a smooth ride for marathon runners.