adidas Y-3 by Yohji Yamamoto Size Chart The adidas® Y-3 by Yohji Yamamoto™ Y-3 Ripstop Logo Cap features a six-panel construction, rear adjustable strap at the back, and tonal brand logo at the front. 60% viscose, 40% cotton. Hand wash. 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.