PROBLEM TO BE SOLVED: To provide a disposable diaper capable of inhibiting occurrence of leakage by improving fitness when a user wears the disposable diaper.SOLUTION: In a disposable diaper 1, a rear-side end of an absorbent core is positioned on a rear side with respect to an inseam elastic member and on a front side with respect to a waist expansion part, and a width-direction outside end of the absorbent core is positioned on the width-direction inside with respect to the inseam elastic member and on the width-direction outside with respect to the waist expansion part. A leg elastic member overlaps a side flap part in the state of being elongated along a longitudinal direction.COPYRIGHT: (C)2014,JPO&INPIT【課題】使い捨ておむつの装着時のフィット性を高め、漏れの発生を抑制できる使い捨ておむつを提供する。【解決手段】 使い捨ておむつ1は、吸収性コアの後側端部は、股下弾性部材よりも後側、かつ腰回り伸縮部よりも前側に位置し、吸収性コアの幅方向の外側端部は、股下弾性部材よりも幅方向内側、かつ腰回り伸縮部よりも幅方向外側に位置する。レッグ弾性部材は、前後方向に沿って伸長された状態でサイドフラップ部に重なる。【選択図】図1
