Disposable wearing article

A disposable wearing article having a longitudinal direction and a transverse direction, including:

• a skin-facing side;
• a non-skin-facing side opposite to the skin-facing side;
• front and rear waist regions;
• a crotch region extending between the front and rear waist regions;
• a liquid-permeable topsheet lying on the skin-facing side a liquid-impermeable backsheet lying on the non-skin-facing side and;
• a liquid-absorbent structure interposed between these top- and backsheets and placed at least in the crotch region, wherein
• the backsheet is formed on the surface thereof facing the liquid-absorbent structure with at least one indicator adapted to develop a color reaction when the at least one indicator comes in contact with at least one of moisture and body exudates, wherein:
• the liquid-absorbent structure includes a liquid-absorbent core and a liquid-diffusive wrapping sheet adapted to wrap the skin-facing surface and the non-skin-facing surface of the core and being continuous outboard of the core in the transverse direction;
• and
• a bottom sheet formed of a hydrophilic fibrous nonwoven fabric is provided between the non-skin-facing surface of the core and the wrapping sheet so that the bottom sheet positionally corresponds to the at least one indicators wherein a dimension in the transverse direction of the bottom sheet is smaller than that of the core, so as to allow a surplus of urine discharged on the core to flow around the bottom sheet and the at least one indicator contains a hot-melt polymer, an indicator agent adapted to develop a color reaction and a plasticizing oil, and the at least one indicator is adapted to put in direct contact with the wrapping sheet, wherein an oil absorbency of the wrapping sheet is higher than that of the bottom sheet.