Along the width direction, this diaper (10) has two stretching regions (C1, C2, D1, D2) comprising elastic members (34, 35) fixed and arranged in a stretched state, and a non-stretching region (C3, D3) located between the two stretching regions. An absorbent core (22) is configured from a block region and a non-block region (216) positioned outside of the block region in the longitudinal direction or the width direction. The block region comprises a high basis weight part (214a) and a low basis weight part (214b). The non-block region (216) has a constant thickness and basis weight. The block region is arranged in the non-stretching region (C3, D3). A fixed end of the elastic members (34, 35) is positioned in the non-block region (216).
