Altra Olympus 4 Vibram Trail-running shoes Women’s size 12 in Very good used condition. Shoes come with Superfeet brand aftermarket insole. >Balanced Cushioning: Places your heel and forefoot the same distance from the ground to encourage proper, low-impact form throughout your run. >FOOTSHAPE™ TOE BOX: Allows your toes to relax and spread out naturally for more comfort and stability. >GAITERTRAP™: Hook-and-loop tab allows strapless gaiter attachment that prevents debris from building up beneath the shoe. >TRAILCLAW™: Canted lugs positioned strategically beneath the metatarsals to provide traction at toe off. >VIBRAM® MEGAGRIP™: A high performance sticky rubber compound featuring unparalleled grip on wet and dry surfaces, rugged longevity and optimal ground adaptability.