The Ultra Boost ST running shoes have an iconic look with a hugely supportive construction for an enhanced running experience and optimal stability. The revolutionary boost midsole provides plush cushioning with a high level of energy return to increase endurance and push runners forwards with each step. The Primeknit upper has an adaptive fit for personalised support, and an ergonomic heel shape holds the foot comfortably in place. The shoes are finished off with a Stretchweb outsole that uses Continental rubber for exceptional grip, with a naturally flexible design. These legendary running shoes deliver speed, style and support ? essential wear for urban runners.