The adidas UltraBoost Uncaged ‘Carbon’ comes with a knit upper designed to adapt to your foot for a slip-on, sock-like feel. The streamlined design is enhanced by moving the Three-Stripes up to the forefoot, from its usual spot in the middle of shoe, balanced by a heel clip in a similar hue. Underneath, the Boost midsole contains more than 3,000 polyurethane capsules that supply cushion and response, and the Continental outsole comes in a grid pattern for excellent traction.