What is hatbrim?

A hatbrim is the horizontal part of a hat that extends outwards to provide shade and protection from the sun. The size and shape of the hatbrim can vary depending on the type of hat, with some brims being wide and floppy, while others are narrow and stiff. The material of the hatbrim can also vary, with options including straw, wool, and felt. Some hats have a brim that can be folded up or down depending on the wearer's preference. The hatbrim can also be embellished with decorative elements such as stitching, ribbon, or feathers.