This is a Korean children's clothing brand! I've worn it 2 or 3 times. Please refrain from purchasing if you are concerned, as it has been stored at home. The size is around 100-110. It has a relaxed design overall, so it's a little roomy on a 4-year-old/13kg slim boy! It's unisex, so it's super cute on both boys and girls >< I think it's warm because it has a quilted lining. I'm selling it because I don't have a chance to wear it anymore! #KoreanKidsClothes #Outerwear #CheckOuterwear