A sun hat is like a special hat that you wear to protect you from the sun. It's like a regular hat, but it has a wide brim that covers your face and neck to keep them from getting too much sun. The sun can be really hot and bright, and if you're outside for a long time, it can make you feel uncomfortable. Sometimes, it can even make you sick. But if you wear a sun hat, you can stay cool and shaded, and you won't have to worry about getting too much sun on your face and neck. It's like having your own personal shade that goes wherever you go! Some sun hats are also really pretty and colorful, so you can look stylish while you stay safe in the sun.