Barkley s shoes of choice that year was the KEEN can take you from the trails to the city, in style. Arriving in all black, the knitted uppers are crafted from a sustainable mix of recycled PET plastic bottles, then fitted with an EVA midsole and PU insole for optimum comfort with every step. They have a high-traction rubber outsole, too, so you're guaranteed optimum grip, wherever you are.