With a disposable diaper (10), a covering sheet (40) is configured to overlap in a non-skin-contact face side (S1) of an absorbent core (40a). A configuration in a site (A) of overlap by the covering sheet (40b) is such that an end part (41E) of an inner side sheet (41) and an outer side sheet (42) are bonded, and an end part (42E) of the outer side sheet (42) and the inner side sheet (41) are bonded, with an adhesive (1). A configuration in a region whereupon the adhesive (1) is coated is such that a non-adhesive region (B), wherein the inner side sheet (41) and the outer side sheet (42) are not bonded, extends in the product longitudinal direction (L). Indicators (600) are disposed within the non-adhesive region (B).在用後即棄式紙尿布(10)，被覆薄片(40)是構成在吸收性芯(40a)的非肌膚抵接面側(S1)疊合，在被覆薄片(40b)的疊合部位(A)，藉由黏著劑(1)接合內側薄片(41)的端部(41E)與外側薄片(42)，而構成接合有外側薄片(42)的端部(42E)與內側薄片(41)，在塗布有黏著劑(1)的區域間，構成沒有接合內側薄片(41)與外側薄片(42)的非接合區域(B)朝製品長方向L延伸，指示劑(600)被設在非接合區域(B)內。
