Men's Endorphin Speed 4 from Saucony is a racing and interval shoe for men. With a slightly stiffer nylon plate to provide good response and basic stability. The upper consists of a seamless mesh fabric to provide a tight and individual fit. The shoes are designed with SpeedeRoll technology that provides increased continuous movement generating more speed with less energy loss, rolling through the step.\n\nInsole with Super Critical Foam\nSpeedeRoll technology\nSeamless mesh upper\n Saucony Men's Endorphin Speed 4 Black | Buy Saucony Men's Endorphin Speed 4 Black here | Outnorth