Ichimonji-gasa

The Ichimonji Gasa (straight-line hat), also known as hira gasa (flat hat), was worn almost exclusively by samurai during Japan’s feudal period. Unlike other jingasa (military hats), which were often used by ashigaru (foot soldiers), the ichimonji gasa symbolized the prestige and discipline of the warrior class. With its flat, wide-brimmed silhouette and formal appearance, it served as a functional helmet and a status marker for samurai both on foot and horseback.Constructed traditionally from layered paper or cloth hardened with lacquer, the original ichimonji gasa provided lightweight weatherproofing against the elements. However, for battle-hardened samurai, the most robust examples were forged from tetsu (iron or steel). While slightly heavier, these steel hats offered the best protection from overhead strikes and arrows