Game-changing women's runners that are stylish and functional. These Ultraboost shoes are built with an adidas Primeknit upper that wraps your foot for a comfortable supportive fit. The Boost midsole adds endless energy to your daily rounds. The heel counter cage and tongue top are made in premium full grain leather. 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 the ocean. The other 50% of the yarn is recycled polyester.