adidas Y3 Men's Apparel Size Guide adidas® Y-3 by Yohji Yamamoto™ Letterman Jacket classic fit silhouette. Front zipper closure. Long sleeves. Ribbed collar, cuffs and hem. Front zipper hand pockets. Stripe detailing on collar, cuffs and hem. Branding patch on front upper-left. 100% polyurethane. Professional dry clean. Imported. 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.