You generate the energy. These adidas running shoes return it. That's the magic behind the legendary Ultraboost design. This pair revives the OG adidas Primeknit pattern from 2015 as an ode to the beloved shoe. Lace in and enjoy all-day comfort. Style, too. This product is made with Primegreen, a series of high-performance recycled materials. 50% of the upper is recycled content. No virgin polyester.