A hat is a head covering that serves various purposes, including protection, ceremonial significance, religious observance, safety, and fashion. Typically, a hat consists of a crown and a brim, though designs can vary widely. Historically, hats have symbolized social status and professional roles. In the military, for instance, specific hats denote nationality, branch, rank, or regiment. Beyond their functional uses—such as shielding from the sun or providing warmth—hats also play roles in cultural and religious practices. For example, the mortarboard is worn during graduation ceremonies, while turbans are commonly worn in Sikhism. Over time, hats have evolved into fashion statements, reflecting individual style and cultural trends.