Sleek, light and packed with performance tech, these adidas Ultraboost shoes score high across the board. While the sock-like adidas PRIMEKNIT upper feels airy and flexible, a specially-designed heel counter supports the backs of your feet to keep you striding comfortably through long runs. The energy-returning adidas BOOST midsole is cushioned and springy, while a Stretchweb outsole, made with Continental™ Rubber, grips any surface for a smooth ride.