The adidas Ultraboost men's shoes are built with an ultra-responsive boost™ midsole that absorbs the power from your footstrike to release it at push-off for a light, super-energised ride. The adidas Primeknit upper hugs your foot in comfort through each phase of the gait cycle, while a supportive cage secures a lockdown fit. A stretchy gridlike outsole flexes to adapt to the way your foot hits the ground.