This embroidered, highly-detailed Navy cap is made of 100% cotton and features an adjustable, metal-clasped back.
A "Shellback" is a sailor who has crossed the Equator and refers to them being honorable and trustworthy. The cap features an embroidered image of the Roman god of the sea, Neptune, because Shellbacks are also referred to as "Sons of Neptune"; while sailors who have not yet "Crossed the Line" are called Pollywogs.