The Altra Escalante helps take runners to new levels of comfort and performance. The sock-like knit upper provides an effortlessly supported fit and feel as well as a trendy look. Runners will enjoy a fast feel from the Altra EGO™ midsole compound that provides explosive responsiveness during the run. The lightweight nature and level of cushioning in this shoe make it perfect for the neutral runner on training and race day. Upper: Lightweight and flexible engineered Knit upper for a sock-like fit and feel. Lace-up front offers an adjustable fit. Midsole: Features Altra EGO™ with InnerFlex™ for energetic responsiveness and speed. The Zero Drop™ platform with a FootShape™ toe box allows the toes to relax and spread out naturally and the big toe to remain in a straight position for more stability and powerful toe-off to maximize running performance. Outsole: Foot Pod Outsole technology maps the bones and tendons of the foot to let it flex where it naturally wants.