Design: Internal webbing and updated mesh provide lightweight, breathable support and containment Plush waterfall comfort collar provides additional comfort while new heel foam components help lock in the heel and ankle to provide additional stability Layers of breathable mesh and strategically placed overlays give you a secure fit In-Shoe Comfort: Nike React foam in the midsole provides soft underfoot feel and eliminates stud pressure and delivers an extremely smooth, responsive ride Durability & Traction: 2-piece plate with molded studs provides optimum flexibility and comfort underfoot for that "runnable" feel