The new Provision 8 has the same medial GuideRail technology you've always relied on, but only when you need it. Stoke your road running confidence with an inherently stable ride and Altra EGO midsole foam, made to deliver the ultimate responsiveness and comfort. Altra's Natural Fit will keep you moving the way you were designed to. The new Provision 8 offers a roomy toe box, secure midfoot, and zero drop. A refined molded heel collar ensures a secure fit while a new engineered mesh upper offers a sleek yet breathable design. It's time to fine tune your performance in comfort and style, with the subtle support you've been craving. | Altra Men's Provision 8 Running Shoes