Ultra Boost ShoesA light, luxuriously cushioned running shoe for any pace and any distance.Step into these neutral men's running shoes and you will rethink everything you know about what fast and comfortable feel like. They're built with boostâ„¢ for incredible energy-returning cushioning beneath your feet. With a breathable adidas Primeknit upper for a flexible and supportive fit and a STRETCHWEB outsole for a smooth, neutral transition.Weight: 10.7 ounces (size 9)adidas Primeknit is carefully engineered to naturally expand with your foot while you run to give you a more comfortable fit and help reduce irritationboost™'s energy-returning properties keep every step charged with an endless supply of light, fast energyTORSION® SYSTEM for midfoot integrity; Molded 3-Stripes and heel counter for support and optimum heel hugSTRETCHWEB rubber outsole is lightweight and elastic, adapting to the ground for stability and working strategically to optimize the unique properties of boost™ from touchdown to push-offRunner type: neutral; Stack height: 30.5 mm / 20.5 mm (10 mm differential)Imported