Crafted with an engineered mesh upper and a roomy FootShape™ toe box, the Altra Women's Olympus 5 Trail Shoes deliver a secure fit that's both breathable, and durable while allowing your feet the space for them to move and splay naturally. At the midsole, lightweight compression moulded EVA foam provides underfoot comfort and protection - absorbing impact shocks as you navigate across rocks and roots while a premium Vibram® MegaGrip™ outsole with deep lugs manages to find grip on the most technical of terrain. Balanced Cushioning With a zero-drop construction, your heel and forefoot are placed at the same distance from the ground ensuring comfortably balanced cushioning that promotes efficient low-impact form with each stride. FOOTSHAPE™ toe box Enhancing both comfort and stability, the FOOTSHAPE™ toe box gives enough room to allow your toes to relax and spread out naturally as you move. GAITERTRAP™ debris protection Prevent trail debris from building up beneath the shoe with a convenient hook-and-loop tab to secure a strapless gaiter attachment. VIBRAM® MEGAGRIP™ traction Ensuring advanced traction on both wet and dry surfaces alongside optimal ground adaptability and long-lasting durability.