In its sixth version, the Challenger ATR 6 goes even further in terms of versatility. As the name suggests, this versatile, all-terrain shoe defies convention, plus it's lightweight on the trail and fluid in the city thanks to its midsole geometry and outsole construction. Dynamically designed to grip any surface, it features a unique outsole with strategic overlays, designed to optimize grip and weight. Featuring large lugs strategically placed close together, the outsole of the Challenger ATR 6 ensures a smooth transition from one surface to another. This season's version is made with Unifi REPREVE® yarn from recycled plastic.