Are feathers from endangered bird species still commonly used on hats? Why do many Muslim women cover their heads? How has advancing technology influenced modern headwear? This concise encyclopedia provides the answers to these questions and many more regarding headwear and human culture in its examination of headwear around the world. It examines topics from ancient times to the modern era, providing not only detailed physical descriptions and historical facts but also information that addresses cultural significance, religion, historical events, geography, demographic and ethnic issues, fashion, and contemporary trends. The entries reveal fascinating insights into headwear as historical, aesthetic, fashion, utilitarian, mystical, and symbolic apparel, and supplies comprehensive analyses of hats across the globe unavailable in the existing literature.