A
sun hat (also known as the
harvest hat or
field hat) is a head covering specifically designed to shade the face and shoulders from the
sun. The sun hat incorporates a variety of materials and types, including the straw sun hat, pressed fiber sun hat, and the
pith helmet (sun helmet). In modern times, sun hats are common in places around the world, mainly in holiday resorts residing in countries close to the Earth's
equator. They are particularly useful in protecting against
ultraviolet rays (UV). The style of a sun hat can range from small to large brims. However, as a general guideline, the brim is four to seven inches in length.