Help achieve a personal best with the Y-3 Ultraboost 5 runners. With a signature PRIMEKNIT upper, an all new TPU heel cage elevates the design. Featuring a BOOST midsole for lightweight cushioning and performance, a Continental™ Rubber outsole provides traction with every step. PRIMEKNIT Upper, Lace Closure, TPU Heel Cage, BOOST Midsole, Continental™ Rubber Outsole, Y-3. These sneakers are designed for adult men and feature a black color family. The model is part of the Ultraboost series and is a UK size 8.