A disposable diaper (10), wherein a front waist region (13) has an inner layer sheet (21) and an outer layer sheet (23) formed from a fiber nonwoven fabric, a first elastic body positioned at least at a waist opening edge (19a), a front upper waist elastic body (second waist elastic body) (27A) positioned between a front end edge (53a) of an absorbent chassis (12) and a front end edge (43a) of an absorbent core (43), a first elastic region (71) having elasticity due to a stretchable sheet (30) that serves as the first waist elastic body, and a second elastic region (72) having elasticity due to the stretchable sheet (30) and the front upper waist elastic body (27A). The first elastic region (71) is positioned between the waist opening edge (19a) and the front end edge (53a) of the absorbent chassis (12), the second elastic region (72) is positioned to a crotch region (15) side of the first elastic region (71), and the elongation stress of the second elastic region (72) in a horizontal direction (X) is greater than the elongation stress of the first elastic region (71) in the horizontal direction (X).本發明之課題係在於提供可防止腰圍開口緣側捲起之用後即棄式穿著用物品。 用以解決課題之手段為，用後即棄式穿著用物品之用後即棄式紙尿布(10)，係具備橫方向(X)及縱方向(Y)，並且具有：前腰圍區域(13)；後腰圍區域(14)；位於前後腰圍區域(13、14)間之褲襠區域(15)；從褲襠區域(15)朝前腰圍區域(13)延伸並具有吸收性芯材(43)之吸收主體(吸液構造體) (12)；及腰圍開口(19)。前腰圍區域(13)係還具有：以纖維不織布所形成的內層薄片(21)和外層薄片(23)；至少位於腰圍開口緣(19a)之第1彈性體；位於吸收主體(12)的前端緣(53a)與吸收性芯材(43)的前端緣(43a)之間的前上方腰圍彈性體(第2腰圍彈性體) (27A)；藉由第1腰圍彈性體之伸縮性薄片(30)，使其具有彈性之第1彈性區域(71)；及藉由伸縮性薄片(30)與前上方腰圍彈性體(27A)，使其具有彈性之第2彈性區域(72)。第1彈性區域(71)係位於腰圍開口緣(19a)與吸收主體(12)的前端緣(53a)之間。第2彈性區域(72)係位於第1彈性區域(71)之褲襠區域(15)側。第2彈性區域(72)的橫方向(X)之伸長應力是較第1彈性區域(71)的橫方向(X)之伸長應力大。
