The sanitary napkin (100) the rear end (38) for the installing which is separated, the sanitary napkin extra addition product which forms the addition of the aforementioned sanitary napkin (10). The aforementioned extra addition product is formed, the basis section (12), and, structure of the fin condition which the aforementioned basis section is extended at least at length of part (14) from, structure of the aforementioned fin condition extends to upward from the aforementioned basis section, structure of the aforementioned fin condition is adapted, in order the thigh of the aforementioned user and to form the barrier between the gluteal areas, in order to fill up at least partly the opening between the gluteal areas of the user.< Selective figure >Figure 1生理用ナプキン(100)の後端(38)の分離した取付けのため、前記生理用ナプキンの拡張部分を形成する生理用ナプキン予備の付加物(10)。前記予備の付加物は、基底部(12)、および、前記基底部の少なくとも一部の長さで延長しているひれ状の構造(14)から構成され、前記ひれ状の構造は前記基底部から上方へ突出し、前記ひれ状の構造は、前記ユーザの大腿および臀部間のバリアを形成するため、ユーザの臀部間の少なくとも部分的にすき間を満たすように適応する。【選択図】図1
