According to the 'Tenjukoku Shucho' (embroidery representing Tenjukoku paradise), which is said to have been made under the direction of the wife of Prince Shotoku, Court caps used in those days were something like a silk cap.
この時点の冠は聖徳太子の妃の指導で製作されたといわれる「天寿国繍帳」などを見るに、絹製の帽子のようなものであった。