The Y-3 Runner 4D ‘Core Black’ rides on adidas’ revolutionary 3D-printed midsole, its lattice-like structure offering precision-tuned support based on years of athlete data. Up top, a black Primeknit build is reinforced with crossed rubber caging and tonal leather overlays. Exterior branding is limited to Yohji Yamamoto’s signature embroidered on the lateral eyestay. Underfoot, a Continental rubber outsole provides grippy traction.