Headgear, headwear or headdress is the name given to any element of clothing which is worn on one's head.Headgears serve a variety of purposes: protection (against impact, cold, heat, rain and other precipitation, glare, sunburn, sunstroke, dust, contaminants, etc.)to keep hair contained or tidy decoration or fashion religious purposes medical purposes modesty; social conventiondistinction; a badge of office