Design: Single-layered engineered mesh in the upper gives you an accommodating fit and comfortable feel Broadened forefoot and heel width compared to the Winflo 10 for an updated standard of neutral stability on the road Neutral support gives you balance, whether you're a heel or forefoot striker Reflective details In-Shoe Comfort: Softened tongue padding Smoother, softer lining inside the shoe Full-length Nike(R) Air unit provides a soft, yet responsive ride with plenty of helpful support Soft, springy foam underfoot offers you the right amount of pop for road runs