Men's Altra® Olympus 275 Hilo: Built for rugged mileage and long days on technical terrain, the Olympus 275 HiLo gives trail runners the confidence to push farther with comfort you can count on. Updated Altra EGO™ MAX foam is lighter and softer than before, delivering a smooth, responsive ride mile after mile, while Vibram® Megagrip with TractionLug™ locks in reliable traction on wet and dry surfaces. A durable MATRYX® one?piece woven upper balances breathability with protection, and the roomy FootShape™ toe box allows natural movement through every phase of your stride. Paired with a zero?drop platform, this shoe keeps you moving efficiently whether training all day or lining up for your next ultra.