Y-3's Ultraboost Sneakers reinterpret the iconic running shoe in a contemporary way, combining minimal aesthetics and technical innovation. Featuring sophisticated detailing, they come with a new TPU heel cage with Yohji Yamamoto's signature embossed design and a redesigned lace cage. The Adidas Primeknit upper, BOOST midsole, and Continental rubber outsole ensure excellent comfort, responsiveness, and grip. Composition: 100% Fabric, 100% Rubber.