Built for race day and serious tempo work, the Endorphin Pro 4 is our top pick for runners chasing PRs on the road. PWRRUN PB foam paired with a carbon-fiber plate delivers a propulsive, efficient ride with every stride. At 7.4 oz, it stays light enough to never slow you down.Carbon-fiber plate drives propulsion and energy return for a faster, more efficient stridePWRRUN PB midsole foam offers a responsive yet cushioned ride — 39mm heel / 31mm forefoot stack, 8mm dropEngineered mesh upper locks down your foot securely without adding weight or trapping heatAt 7.4 oz (men's size 9), it's light enough for race day and fast enough for your hardest training blocksAvailable in a wide range of colorways including White/Gold, Lapis/Citron, Black/VO2, Viziorange, and more — sizes 7 through 15