OMG!!!!!!! Okay so once I saw this I was like "I'm going to buy this FO SHO!!" Lol. I'm about 5'7 ish and I'm 125-129 pounds, but I still wasn't sure if I should get XL(US large) or L(US medium) so I emailed Doublju.*cough**cough*(its a good idea)*cough*cough*. And they said to get L(US medium) which I did and it was a Perfect fit!! They have AMAZING customer service, and their shipping is really fast! It shipped From Korea to the US in only 5 days! WOO! I'm totally going to buy more ha-ha.
I 100% recommend this if you are slim.