The cap, also known as the duck cap, features a flat top and a visor. The brim is from two inches to four inches, and the width is different. The cap was originally a hat worn by a hunter when hunting. Therefore, it is also called a hunting cap. Because it is flat like a brim of a duck tongue, it is called a cap.
In the spring and summer, the cap began to combine with the fashion sports style, many designers like to use the cap to match the design of the sporty clothing series.