This running shoe will change the way you think about what it feels like to be comfortable, fast, and have well-cushioned footwear. The adidas Ultraboost sneakers have an active boost™ foam in the midsole, made of thousands of energy capsules that store and release endless energy with every contact with the ground. As a result, you'll feel incredibly light while running. The shoe features a seamless upper made of flexible Primeknit material, as well as TORSION® SYSTEM technology to reinforce the midfoot.