What is a Duckbill cap
The Duckbill cap got its name because the shape can be likened to a duckbill. The model is also called Pub cap as the cap type was common among British working class and the relaxed British pub culture.
A Duckbill cap is flat like a Flat cap, but is more tightly sewn without overhanging fabric on the sides and has a tight screen.
If you are looking for as tight a cap as possible, a Duckbill cap is the best choice.