You know how the adidas Ultraboost revolutionised comfort with its responsive BOOST midsole? This version of the iconic shoes has even more of it. More BOOST. More comfort. Find an energy-filled ride while you tackle 10Ks or quick loops in the city. An adidas PRIMEKNIT upper hugs the foot with targeted support, and a Linear Energy Push System increases stiffness to propel you from one step to the next.