Y's by Yohji Yamamoto Women's Apparel Size Chart This ribbed knit Y's by Yohji Yamamoto™ sweater features an asymmetrical mock neck, long sleeves, and asymmetrical hemline. Side vent at the right. 48% rayon, 26% polyester, 26% nylon. Professional dry clean only. Made in Japan. This item may ship with an attached security tag. Merchandise returned without the original security tag attached or a damaged tag may not qualify for a refund.