Runner-informed data was used to create and place engineered mesh throughout the upper for a sturdy and breathable feel. Flywire technology is integrated with a midfoot band for total support that helps keep your feet in place. Rubber outsole features a generative traction pattern that was created using data from runners like you. It provides grip in key areas to help you stay upright and stable over rocky trails while still maintaining a smooth ride on the road. Plus, rubber from the outsole wraps up onto the forefoot for extra durability. Nike React technology is a lightweight, durable foam that delivers a smooth, responsive ride.