Light, supportive and energized, the Ultraboost Light Shoes are here to help you go the distance in greater comfort. The Light BOOST midsole is a new generation of adidas BOOST and our lightest one yet, delivering epic energy in every stride. The Linear Energy Push system adds extra stability and the adidas PRIMEKNIT upper, provides smooth comfort and distraction-free movement. Lace up in these shoes and celebrate the euphoria that comes from running. This shoe's upper is made with a high-performance yarn that contains at least 50% Parley Ocean Plastic — reimagined plastic waste, intercepted on remote islands, beaches, coastal communities and shorelines, preventing it from polluting our ocean. The other 50% of the yarn is recycled polyester.