A hat is a covering made to fit the head. Most often, it has a brim and is worn outdoors. A hood, cloth cap or flat cap, beanie, beret, bobble hat, derby, sunhat, cowboy hat, baseball cap, boater, panama, top hat, cap, hardhat, crash helmet, etc., are all different types and designs of hat serving different purpose. A hardhat is generally used by players and a crash helmet is a must for pillion riders.

Hats have been useful for a long time. They help people in both summer and winter and also serve as a part of school and professional uniforms. In armed services and the police, hats are a must. Hats have another function as well; they can work as walking billboards and increase a company