These running shoes combine comfort and high-performance technology for a best-ever-run feeling. They have a stretchy knit upper that adapts to the changing shape of your foot as you run. Responsive midsole cushioning and a flexible outsole deliver a smooth and energized ride. Regular fit Lace closure adidas Primeknit textile upper Flexible Stretchweb outsole; Continental™ Rubber outsole for extraordinary traction in wet and dry conditions Responsive Boost midsole Lightweight and supportive ADIDAS Ultraboost, Black/ Red