PROBLEM TO BE SOLVED: To widely secure an effective absorbent width of an absorber, suppress the formation of a gap between a wearer and the absorber, and also reduce resistance felt at the wearing time.SOLUTION: A pants-type diaper 1 includes: extensible zones A where an elastic member FG can extend, on both sides of a width direction W outside superposed on an absorber 30 and including both side edges 30E along the longitudinal direction L of the absorber 30, in at least one of a front girth member 4 and a rear girth member 5； and a non-extensible zone B where the elastic member FG cannot extend, in a width direction W inner side than both side edges 30E of the absorber 30. A position of an end E1 in the width direction W inside of the extensible zone A on one side of the width direction W outside including both side edges 30E, and a position of an end E2 in the direction W inside of the extensible zone A on the other side of the width direction W outside including both side edges 30E are provided while being deviated from each other in the longitudinal direction L.SELECTED DRAWING: Figure 2【課題】吸収体の有効吸収幅を広く確保するとともに、着用者と吸収体との間の隙間の形成を抑制し、併せて、着用時に感じる抵抗を低減する。【解決手段】本発明に係るパンツ型おむつ１では、前胴回り部材４及び後胴回り部材５の少なくとも一方において、吸収体３０に重なっており吸収体３０の長手方向Ｌに沿う両側縁３０Ｅを含む幅方向Ｗ外側の両側に弾性部材ＦＧが伸縮可能な伸縮域Ａを有し、かつ、吸収体３０の両側縁３０Ｅよりも幅方向Ｗ内側に弾性部材ＦＧが伸縮不能な非伸縮域Ｂを有し、かかる両側縁３０Ｅを含む幅方向Ｗ外側の一方側の伸縮域Ａの幅方向Ｗ内側の端部Ｅ１の位置と、かかる両側縁３０Ｅを含む幅方向Ｗ外側の他方側の伸縮域Ａの幅方向Ｗ内側の端部Ｅ２の位置とが、長手方向Ｌにおいて互いにずれて設けられている。【選択図】図２
