Abstract: An absorbent pad (1) for an underweight baby has a lengthwise direction, a width direction, and a thickness direction which are perpendicular to one another, and has an absorbent body (2). The length (L1) in the lengthwise direction is 180 mm or less, and the length (W1) in the width direction is less than 75 mm.

Abstract: A low-weight infant diaper has a longitudinal direction and a width direction that intersect each other. The low-weight infant diaper includes: an exterior sheet disposed closer to a non-skin side than an absorbent body; and a belt including a first locking member on a first side in the width direction and a second locking member on a second side opposite to the first side in the width direction. The belt is locked to a non-skin side of the exterior sheet by the first locking member. The belt includes a first additional joining portion that causes a part of the belt to join the exterior sheet. The first additional joining portion is disposed in a region in the first side.

Abstract: A low-weight infant diaper includes: an absorbent body; an exterior sheet disposed closer to a non-skin side than the absorbent body; a pair of belts; and a first marker that indicates a lock position where one or more of the belts are locked to the non-skin-side surface of the exterior sheet. Each of the belts comprises a first locking member on a first side in a longitudinal direction of the belts and a second locking member on an opposite side of the first side in the longitudinal direction. The first and second locking members cause each of the belts to be locked to a non-skin-side surface of the exterior sheet. The marker is visible from a non-skin-side surface of the exterior sheet.

Abstract: A low-weight infant diaper has a longitudinal direction, a width direction, and a thickness direction that intersect each other. The low-weight infant diaper includes: an absorbent body including at least an absorbent core; an exterior sheet disposed closer to a non-skin side than the absorbent body; and belts including a first locking member on a first side in longitudinal direction of the belts and a second locking member on a second side opposite to the first side in the longitudinal direction of the belts. The absorbent body includes a longitudinal outward end (LOE) in the longitudinal direction. The absorbent core includes an LOE in the longitudinal direction. The exterior sheet includes an LOE in the longitudinal direction. The first locking member includes an LOE in the longitudinal direction.

Abstract: A disposable diaper includes side flaps; pieces of fastening tape respectively arranged on widthwise side portions of the side flaps; and joining portions each of which joins a portion of each piece of the fastening tape to a non-skin side of the side flaps in the thickness direction. In an unfolded state, for each of the pieces of fastening tape, a magnitude of force applied at a time when the joining portion is peeled off when a region of the fastening tape that is outward in the width direction with respect to the joining portion is pulled in an outward direction is greater than a minimum value of an magnitude of force applied at a time when the joining portion is peeled off when a region of the fastening tape that is inward with respect to the joining portion is pulled in any outward direction.