"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 Y-3 lends its uninhibited approach to a running silhouette. The Ultraboost 22 Shoes have a clean, uncaged slip-on construction with a flexible Primeknit upper and technical rubber detailing. Elastic straps and a contrast pop on the heel pay homage to the iconic Y-3 Qasa. The Boost midsole offers enhanced cushioning, while the outsole keeps you grounded.