What is a "hat"?

A hat is a head covering that can be made of various materials, such as fabric, straw, felt, or leather, and worn for a variety of purposes. Hats can be worn as protection from the elements, such as sun, rain, or cold, or as a fashion accessory to complete an outfit or make a statement. Hats come in a variety of styles and shapes, from the classic fedora or baseball cap to the traditional bowler or top hat. Some hats also have functional features, such as a brim to shield the face from the sun or a chin strap to keep the hat in place during windy conditions.