adidas Beloved by athletes and sneakerheads alike, the Ultraboost has been a legend since its 2015 debut. These shoes take the genetic code of that original pair — the foot-hugging adidas Primeknit upper and energy-returning Boost midsole — and transform it into a lifestyle shoe made with the future in mind. As a part of adidas' commitment to help end plastic waste, they are made with recycled materials. This product is made with Primeblue, a high-performance recycled material made in part with Parley Ocean Plastic. 50% of the upper is textile, 75% of the textile is Primeblue yarn. No virgin polyester.