Sailor caps, also known as navy caps or fore-and-aft caps, are a type of headwear traditionally worn by sailors. They are typically made of cotton or wool and feature a flat, circular top with a stiff brim. The design is practical, providing shade from the sun and protection from the elements while at sea. These caps often have a distinctive white band around the base, which may display the sailor's rank or the name of their ship. Sailor caps have become a popular fashion accessory beyond maritime use, often associated with nautical themes and casual summer attire.