This disposable diaper (1) comprises: an absorbent body (2) which includes an absorbent (23) and a surface sheet (21)； and an outer shell (3) which affixes the absorbent body (2) in place. The disposable diaper (1) has a front-side portion (F), a rear-side portion (R) and an under-crotch portion (M). The outer shell (3) has a sweat-absorbent area (KT) on the skin-contact surface of the rear-side portion (R) or the front-side portion (F). The sweat-absorbent area (KT) includes a hydrophobic layer (4), which has hydrophobic fibers and is positioned on the skin-contact surface-side of the sweat-absorbent area (KT), and a hydrophilic layer (5), which has hydrophilic fibers (51) and is positioned adjoining the non-skin-contact surface-side of the hydrophobic layer (4)., and is formed by bonding the hydrophobic layer (4) and the hydrophilic layer (5) using a hot-melt adhesive. The bonded portion (6) at which the hydrophobic layer (4) and the hydrophilic layer (5) are bonded to one another with a hot-melt adhesive has first bonded portions (61) that extend in a direction intersecting the direction in which the hydrophilic fibers (51) are arranged and are positioned intermittently in said direction of arrangement. The contact angle of water with respect to the bonded portion (6) is at least 90°.La présente invention concerne une couche jetable (1) comprenant : un corps absorbant (2) qui comprend un agent absorbant (23) et une feuille de surface (21) ； et une enveloppe externe (3) qui fixe le corps absorbant (2) en place. La couche jetable (1) présente une partie côté avant (F), une partie côté arrière (R) et une partie sous entrejambe (M). L'enveloppe externe (3) possède une zone absorbant la sueur (KT) sur la surface de contact avec la peau de la partie côté arrière (R) ou de la partie côté avant (F). La zone absorbant la sueur (KT) comprend une couche hydrophobe (4), qui possède des fibres hydrophobes et qui est positionnée sur le côté de surface en contact avec la peau d
