An object of the present invention is to provide a less pants-type diaper which interfere with the operation of such movement of the legs while providing a comfortable fit to the wearer. And An absorbent main body 10, and the ventral band member 30a, has a back-side band member 30b, the, the ventral waist elastic member 35a is provided on the ventral side band member, to the back-side band member dorsal waist elastic member 35b is provided, and the absorbent pair of legs around the elastic member 19 is in the body, and a pair of leakage preventing walls elastic member 17r, is provided, the overlap is an absorbent body and the back-side band member area is the size of the above area of a portion where the absorbent body and ventral band member to overlap, in the thickness direction, and the abdominal-side band member and the back-side band member, the extension of the leg around the elastic member and the leakage preventing wall elastic member overlaps a portion of the state, extended portion and the back-side band member and the length of the overlap of the state of the leakage preventing wall elastic member, overlap is extended state of the part of the leg around the elastic member and the back-side band member longer than the length.FIELD 7【課題】着用者に快適なフィット性を与えつつ脚の動き等の動作を妨げにくいパンツ型おむつを提供する。【解決手段】吸収性本体10と、腹側帯部材30aと、背側帯部材30bと、を有し、腹側帯部材には腹側胴回り弾性部材35aが設けられ、背側帯部材には背側胴回り弾性部材35bが設けられ、吸収性本体には一対の脚回り弾性部材19と、一対の防漏壁弾性部材17rと、が設けられ、背側帯部材と吸収性本体とが重なる部分の面積は、腹側帯部材と吸収性本体とが重なる部分の面積以上の大きさであり、厚さ方向において、腹側帯部材及び背側帯部材と、脚回り弾性部材及び防漏壁弾性部材の伸長された状態の部分が重なっており、防漏壁弾性部材の伸長された状態の部分と背側帯部材とが重なる長さは、脚回り弾性部材の伸長された状態の部分と背側帯部材とが重なる長さよりも長い。【選択図】図7