A pea-jacket is a type of heavy-duty jacket that is traditionally made of navy blue wool and has a double-breasted front with large buttons. It is characterized by its short length and wide lapels. This type of jacket was originally worn by sailors, but has since become a popular garment for both men and women. There are several synonyms for the term pea-jacket, including peacoat, pilot jacket, reefer jacket, and a P-coat. Each of these terms refers to a similar type of jacket that is typically made from wool or a wool blend and features a similar design and style to the original pea-jacket.