A request from reader who has seen many male idols wearing sweatwear (is that a word... if not it is now) with a certain pattern on them. 
 
If you see any apparel with four stripes on the left sleeve or pants leg, it is Thom Browne. Thankfully the requester provided multiple photos so I could see what he/she is talking about.
 
 
Ji Sung is wearing the Blue Stripey Cotton Fleece Hooded Sweatshirt in Kill Me Heal Me.
 

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