This is a simple cable knit cotton knit vest from Calvin Klein. It has a stand-up collar, giving it a clean and neat look. The high-quality fabric is comfortable to wear. Size: T10 Width (underarm to underarm): Approximately 44cm Length: Approximately 66cm I'm not quite sure about the size notation, but it seems like it would fit someone who wears a Medium to Large size. Please refer to the actual measurements. There is a small, faint discoloration. I personally don't think it's very noticeable, but please check images 4 and 5 and understand that this is a used item. ☆