Court caps for military officers were called keneikan (literally, "rolling ei cap"), and their ei were rolled up inward and fastened with an ebasami, a black lacquered wood piece with a cut.
武官の冠は纓を内巻きにして纓挟（えばさみ）という木製黒漆塗りの切れ込みを入れた木片で留める巻纓冠（けんえいかん）である。