How could the iconic Ultraboost get any better? We asked that question and came up with the answer - infuse it with DNA from an archival cult classic, the Climacool. Here it is, with all of the premier features from those heritage running shoes, including foot-hugging adidas PRIMEKNIT and responsive BOOST cushioning. Made with a series of recycled materials, this upper features at least 50% recycled content. This product represents just one of our solutions to help end plastic waste.