Featuring a seamless wrap-around engineered knit upper, the Altra Women's Superior 5 Trail Shoes deliver a secure precision fit for an agile performance on the train that's comfortable and allows your feet to breathe so your temperature is regulated. Designed with a traditional lacing system and a roomy FootShape toe box to give a lockdown feel while providing enough room for your feet to move and splay naturally. Quantic technology at the midsole gives lightweight yet responsive underfoot cushioning while a durable MaxTrac outsole with high traction TrailClaw lugs instills confidence on technical 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. TRAILCLAW lugs Increasing traction at toe-off, canted lugs are positioned strategically beneath the metatarsals to deliver extra grip. MAXTRAC traction with TRAILCLAW lugs Take on technical terrain with confidence thanks to the perfect balance of superior traction alongside long-lasting durability.