An absorptive article according to the present invention includes: a main absorber 1002 composed of a liquid-permeable top sheet 1003, liquid-impermeable back sheet 1004, and an absorber 1005 disposed between the top sheet 1003 and the back sheet 1004, absorbing and retaining fluid, and including a back-side region S11, a crotch region S12, and a belly-side region S13 arranged in the longitudinal direction from the back side to the belly side in a state of wearing and a left-and-right pair of side-flap portions 1010 provided on both sides in the width direction W of the main absorber 1002. The lower surface of the main absorber 1002 and the back sheet 1004 located at the side-flap portions 1010 are joined. Each side-flap portion 1010 has, between the width edge of each side-flap portion 1010 and each side edge of the absorber, a highly-moisture- permeable region 1006 having a larger moisture permeability as compared with the lower surface of the main absorber 1002.本發明具備有:由透液性的表面薄片1003、不透液性的裏面薄片1004、及配置在表面薄片1003與裏面薄片1004之間,吸收並保持液體的吸收體1005所構成,於穿用時,在從背側到腹側的長方向L,具有背側區域S11、胯下區域S12、腹側區域S13的吸收性本體1002;以及設在吸收性本體1002的寬方向W的兩側的左右一對側翼部1010。吸收性本體1002的下面與位在側翼部1010的裏面薄片1004是由連續的一體物所構成。在側翼部1010的寬方向端緣與吸收體側緣之間,側翼部1010具有比吸收性本體1002的下面具透濕性的高透濕區域1006。1001B...紙尿布1002...吸收性本體1003...表面薄片1004...裏面薄片1005...吸收體1006...高透濕區域1010...側翼部1012...彈性構件1014...腰翼部1015...卡止構件