The Altra Women's Olympus 275 HiLo Trail Running Shoes are trail running shoes built for runners who demand confidence, comfort, and durability on technical terrain. Featuring an updated Altra EGO(TM) MAX midsole, they deliver a softer, lighter ride that helps keep legs feeling fresh over long miles and rugged climbs. The MATRYX one piece woven upper is engineered for exceptional durability while an integrated scree sleeve helps keep trail debris out. A Vibram Megagrip outsole with TractionLug(TM) technology provides outstanding grip on wet rocks, loose dirt, and uneven trails for surefooted performance. Finished with Altra's Original FootShape(TM) fit and a zero drop platform, these shoes encourage natural movement whether tackling an all day adventure or an ultra distance race.