Engineered mesh lends a dynamic, lightweight fit to the Saucony Guide ISO. This runnign shoe consists of an ISOFIT design intended to create a dynamic fit system by adapting to the shape and motion of the runner‘s foot. In the midsole, PWRFOAM and EVERUN Topsole construction combine to enhance energy return and continuous cushioning throughout the run. The medial side is posted for stability in an effortless transition with each step. And on the outsole, a refined TRI-FLEX design offers greater ground contact and flexibility.