Yohji Yamamoto and Y-3 continue to innovate with this Y3 Boost QR Knit. As the name suggests, it features a mostly knit upper that wraps the foot with a snug and adaptable fit. The sock-like design is complemented with a leather TPU heel cage for stability, which also serves as a sophisticated design detail. The shoe incorporates adidas Boost technology into the midsole for a more responsive ride.