In the early days of the Edo period, tomesode (formal black kimono) did not have furiyatsuguchi, leading to the theory that once kimono with open furiyatsuguchi-style sleeves appeared, it came to be called furisode; according to this theory, the practice of calling kimono with long dangling sleeves "furisode" must have started only after tomesode sleeves began to be made in the furiyatsuguchi style during the Edo period.
江戸時代の初期、留袖には振八つ口がなく、「振八つ口が開いている服」を振袖と呼んでいたという説があり、この説によれば、袖丈が長い和服を振袖と呼ぶようになった時期は、江戸時代に留袖に振八つ口を作るようになった後であるとされる。