A sailor's jacket is a type of outerwear worn by sailors and other seafarers. The two most common types of sailor's jackets are the peacoat and the REEFER. A peacoat is a heavy, double-breasted coat with wide lapels and a high collar, typically made of wool. It usually has large pockets and is often navy blue in color. A REEFER is a short, double-breasted jacket with a high collar and wide lapels, typically made of wool or cotton. It is usually navy blue in color and has brass buttons.