A chassis of a diaper includes a first outer sheet defining a front waist region and a part of a crotch region, a second outer sheet defining a rear waist region and a part of the crotch region and a middle sheet connecting these sheets and defining a part of the crotch region. To the skin-facing side of the chassis, a liquid-absorbent structure is attached. The liquid-absorbent structure is provided with first and second elastic sheets overlapping front and rear ends of the liquid-absorbent structure, respectively. The first elastic sheet is attached under tension in a transverse direction and in contractible manner between a bottom surface of the liquid-absorbent structure and the first outer sheet and the second elastic sheet is located on a skin-facing surface of the liquid-absorbent structure and attached thereto under tension in the transverse direction and in contractible manner.本發明的課題在提供一種，防止尿等的體液的洩漏，且使穿著用物品內的通氣性提昇，可防止穿著用物品內悶熱或穿用者起斑疹的情況之用後即棄式穿著用物品。解決手段，紙尿褲(1)於的主體(10)是具有：形成前腰部域(2)與胯部域(4)的一部分的第1外面薄片(11)；形成後腰域(3)與胯部域(4)的一部分的第2外面薄片(12)；以及連結該等薄片(11、12)，構成胯部域(4)的一部分的中間薄片(13)。在主體(10)的身體側安裝有從胯部域(4)延伸到前後腰部域(2、3)的吸液構造體(30)。在吸液構造體(30)安裝有重疊在其前後端緣(31、32)的第1及第2彈性薄片(51、52)。第1彈性薄片(51)是位在吸液構造體(30)的底面，且位於第1外面薄片(11)之間，以伸長狀態可收縮地安裝在橫向X，第2彈性薄片(52)是位在吸液構造體(30)的身體側面，並以伸長狀態可收縮地安裝在橫向X。
