PROBLEM TO BE SOLVED: To provide an absorbent article in which a wearer does not have to modify a position of the absorbent article after pulling up shorts in wearing of the absorbent article.SOLUTION: An absorbent article of the invention comprises: a rear surface sheet 23 having a skin facing surface and a non-skin facing surface； and an adhesion part 9 arranged on the non-skin facing surface of the rear surface sheet 23. The absorbent article has an extension area EX which can extend in at least a longitudinal direction L, and the rear surface sheet 23 has an extension structure area B in which plural protrusive parts Bprotruded to the non-skin facing surface side extend in a width direction and arranged in parallel in the longitudinal direction L. The extension area EX is positioned on a position overlapping to the extension structure area B in a thickness direction T. Each of the plural protrusive parts Bis formed of a bottom part Bin which the non-skin facing surface is flat, and wall parts Badjacent to both ends of the bottom part Bin the longitudinal direction L, in the longitudinal direction L. The adhesion part 9 is arranged on the at least two bottom parts Band the wall part Barranged between the bottom parts.SELECTED DRAWING: Figure 4【課題】本発明は、着用者が、吸収性物品の着用に当たり、ショーツの引き上げ後、吸収性物品の位置を修正する必要性が少ない吸収性物品を提供するものである。【解決手段】本発明の吸収性物品は、肌対向面及び非肌対向面を有する裏面シート２３と、裏面シート２３の非肌対向面に配置された粘着部９とを備え、平面視にて、少なくとも長手方向Ｌに伸長可能である伸長領域ＥＸを有し、裏面シート２３は、非肌対向面側に突出した複数の突状部Ｂ１が、幅方向にそれぞれ延在し、長手方向Ｌに並設されている伸長構造領域Ｂを有し、伸長領域ＥＸは、厚さ方向Ｔにおいて、伸長構造領域Ｂと重複する位置に存在し、複数の突状部Ｂ１のそれぞれは、非肌対向面がフラットな底部Ｂ２と、長手方向Ｌにおいて、底部Ｂ２の長手方向Ｌの両端に隣接して存在する壁部Ｂ３とからなり、粘着部９は、少なくとも２つの底部Ｂ２と、その間に存在する壁部Ｂ３とに配置されている。【選択図】図４
