What is "durumagi"

Durumagi is a variety of po, or overcoat in hanbok, the Korean traditional garment. It is usually the topmost layer of clothing that is worn over jeogori (jacket) and baji (pants). Durumagi means "closed all around", and is also known as jumagui , juchaui or juui . Durumagi is worn not only to fend off the cold, but also for ceremonial purposes.