Whether you're heading out for a quick run around the block or running errands all over town, the Ultraboost 5 Sneakers are poised to keep up. Whether you're heading out for a quick run around the block or running errands all over town, the Ultraboost 5 Sneakers are poised to keep up. adidas by Stella McCartney fuses performance sportswear with innovative features, redefining the boundaries of fashion and function.