Y-3 is a strong examination of the blend of sport and style and the tension caused by mixing tradition with all that is modern.  — Yohji Yamamoto Through experimentation and expression, Y-3 transforms a running style for the new era. The Runner 4D Halo Shoes combine ultra-functional technology with an expertise in craftsmanship. In contrast with the see-through mesh upper, the exposed tooling is made with precisely-coded performance zones for stability, comfort and impact absorption. Threads weave through the quarter panel in a nod to adidas' 3-Stripes.