The Nike React Pegasus Trail 4 takes runner-informed data to create the ultimate version of the Pegasus Trail. The upper is built with a new engineered mesh and the midsole has been reshaped to increase the shoe's versatility. What You’ll Love Runner-informed engineered mesh upper Flywire technology midfoot band Nike React midsole Versatile traction from the generative outsole The Nike React Pegasus Trail 4 has a durable and protective upper with a breathable mesh and overlays to increase support on varying terrain. Flywire technology is integrated through the upper to keep feet in place. The Nike React midsole keeps weight down and provides a smooth, responsive ride. Like the upper, the outsole was created using runner-informed data and delivers grip on rocky terrain while maintaining a smooth ride on the road. The React Pegasus Trail 4 is a versatile shoe that can tackle any terrain.