I bought this from the Korean online shopping site BAON for almost 4000 yen! It's from the brand BAON HOUSE. It's a shirt made of 100% cotton, and the material is crisp and sturdy. It's a free size, but it's made to be oversized, so it can also be used as a light jacket. I used it once after purchasing it, but it's in good condition with no stains. #BAON Color: White系 (White-based) Material: Cotton Collar/Neck: Regular Collar Transparency: None