What is a sunshade hat

A sunshade hat is composed of a tongue and a body. The tongue is double or more layers, and the upper tongue can attach to the lower sunshade tongue. There is an upright curved surface behind the tongue, and the curved surface has a hat top that forms a horizontal plane.
The present invention can exert the shading effect of the sun visor cap tongue and add various additives to make the sun visor cap practical, beautiful, and increase its value. After removing the upper tongue of the sun visor cap, it can still be used and cleaned separately.