Men's Ultraboost shoes for an energized run Sock-like fit; adidas Primeknit upper for support and comfort Midfoot cage and heel counter for support; Boost midsole for a responsive feel This product is made with Primeblue, a high-performance recycled material made in part with Parley Ocean Plastic. Get ready for a confident run. These men's adidas Ultraboost shoes raise the bar for comfort and responsiveness. The Linear Energy Push system increases forefoot and midfoot stiffness for an extra push of energy in each step. The outsole is flexible and grippy, giving you all the traction you need.