The Vitamin FF™ Knit Sports Sneaker combines advanced biomechanically designed tech features with super sporty looks. The ultimate sporty, Georgian comfort hybrid for all day wear. A super lightweight, flexible, breathable knit sneaker. On our new Neodynamic™ midsole technology biomechanically developed for exercise, sports, fitness activities and running (if you want). Designed to deliver a fluid, smooth natural movement, with increased propulsion, high rebound damping, and improved support and stability.