Block B's Zico : Suicidal Tendencies

 

Suicidal Tendencies LOGO CAP (Black/Red) - ¥3,360 ($41.75)

 BUY HERE: Suicidal Tendencies Merch Store

Zico wore it on their Japan Showcase. (Photo Source) 

Suicidal Tendencies is a band btw. And this is a part of their band's merch. :)