Running is a transformative experience — whether that's a different outlook, lighter mood or faster PB. Similarly, the Ultraboost is a shoe that lives for progression. The fashion-forward adidas by Stella McCartney Ultraboost Light Shoes ride on a new generation of adidas BOOST — adidas' lightest BOOST ever with even more energy return. The adidas PRIMEKNIT upper wraps the foot with a supportive fit that enhances movement. Wear them for short-to-medium-distance kilometers in the city. MADE WITH A LOWER FOOTPRINT This product was designed to have a lower carbon footprint compared to a previous version. From raw material extraction, processing, packaging, all the way to the end of product's life, we calculate its carbon footprint, conforming to an internationally recognized standard: ISO 14067. This product has a total impact of 7 KG C02e / pair and an average reduction percentage vs. previous version of -31% .