With sock-like adidas Primeknit upper that is even more breathable than before, these adidas Ultraboost running shoes are the new stars of the track and treadmill. A moulded heel counter supports the back of your foot, while adidas BOOST feels responsive and comfortable over long distances. The Stretchweb outsole is made with Continental Rubber for impressive traction and a smooth ride. This shoe's upper is made with a high-performance yarn which 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.