The present invention provides an absorbent article, etc., which is an absorbent article characterized in that a stretched elastic member is arranged between two sheets such that the sheets can be shrunken by the elastic member, wherein the elasticity of the sheets is maintained while the intended area of the sheets is shrunk by the elastic member. The absorbent article of this invention has a hind surrounding elastic material (5R) arranged in a stretched state between a rear external top sheet (70R) and a rear external back sheet (80R), and between the rear external top sheet and the rear external back sheet is provided with: a first adhesion area (R1) having an area configured with the hind surrounding elastic material (5R)； a second adhesion area partially overlapped with the first adhesion area； and an overlapping area (R4) for overlapping the first adhesion area and the second adhesion area and equipped with the end portion of the shrinkage area (R5) shrunk by the hind surrounding elastic material； an external central sheet (100) is laminated at the rear external top sheet in such a manner that it is overlapped with the overlapping area.為了提供吸收性物品等，是在2片薄片材間配置伸展狀態的彈性構件以藉由彈性構件使薄片材收縮之吸收性物品，邊保持薄片材的柔軟性邊藉由彈性構件使薄片材所意圖的區域收縮。本發明之吸收性物品，係於後外裝頂部薄片(70R)和後側外裝背部薄片(80R)之間具有以伸展狀態配置的後腿圍彈性材(5R)，於後側外裝頂部薄片和後側外裝背部薄片之間設置有：第1接著區域(R1)，包含配置有後腿圍彈性材(5R)的區域；第2接著區域，與第1接著區域一部分重疊；及重疊區域(R4)，使第1接著區域和第2接著區域重疊，且配置有藉由後腿圍彈性材收縮的收縮區域(R5)的端部；在後側外裝頂部薄片，以重疊於重疊區域的方式積層有外裝中心薄片(100)。
