Optimal for long-distance running, the Nike Flex 2016 RN sneaker helps deliver all-day comfort and support. Engineered mesh constructs the upper, reinforced by a synthetic heel overlay. Neon eyelets and Swoosh checkmarks add a touch of color. The inner mesh sleeve and molded midsole provide smooth, responsive cushioning. The tri-star outsole, along with the carbon rubber heel and toe, provides flexible durability.