ULTRABOOST PB SHOES FEATHERLIGHT SHOES MADE FOR FAST RUNS. Meet your new best friend for your fastest, longest runs. The sleek silhouette and responsive comfort of Ultraboost show up ready for race day and beyond. These Ultraboost PB Shoes have an upper built with the lightest mesh adidas makes. Internal support locks down the fit when you're powering toward the finish. 3-Stripes inspired by Japanese calligraphy add to the fast feel.