Men's Saucony® Endorphin Speed 5: Step into speed with your updated Men's Saucony Endorphin Speed 5 training and racing shoe, now revamped with a higher focus on race day performance than previous models. The new engineered mesh upper is lighter and more breathable, keeping your feet cool as you chase PRs. A reconfigured outsole with extra coverage in the heel enhances stability, while the full-length groove helps your foot flow naturally through every stride. Whether you're pushing through tempo runs or toeing the line on race day, the Endorphin Speed 5 is built for high-energy returns and lightning-fast pace. Ready to break through your limits?