The Altra Men's Provision 5 Running Shoes are a fresh, new approach to guided, natural foot movement. They come equipped with features you'll recognize as soon as you slip them on such as the contoured surface of the insole, designed to immediately engage with the nerves of your feet. The refined InnovArch™ offers a tailored fit and encourages a natural step cycle, while the GuideRail™ brings extra medial support, but only when it's needed. The Altra Men's Provision 5 Running Shoes support your every step.