THE PRESENT INVENTION AIMS TO IMPROVE THE PANTS-TYPE WEARING ARTICLE OF PRIOR ART SO THAT LEAK OF BODY FLUIDS OTHERWISE OCCURRING BEYOND THE LEG-OPENINGS CAN BE RELIABLY PREVENTED EVEN IF THE WAIST REGION OF THE WEARING ARTICLE SLIP DOWN AFTER THE DIAPER HAS BEEN PUT ON THE WEARER’S BODY. IN A DISPOSABLE PANTS-TYPE WEARING ARTICLE (1), A BODY FLUID ABSORBENT PANEL (3) PROVIDED IN A CROTCH REGION EXTENDS IN A LONGITUDINAL DIRECTION (A) AND IS FIXED TO A SHEET MEMBER (11) DEFINING INNER SURFACES OF FRONT AND REAR WAIST REGIONS. THE BODY FLUID ABSORBENT PANEL IS FORMED ALONG ITS OPPOSITE SIDE EDGES WITH FLAPS (24) AND FREE EDGES (40B) OF THE RESPECTIVE FLAPS ARE PROVIDED WITH CROTCH REGION ELASTIC MEMBERS (43) ATTACHED UNDER TENSION THERETO. THE FRONT AND REAR WAIST REGIONS ARE PROVIDED ALONG PERIPHERAL EDGES OF LEG-OPENINGS (28) WITH LOWER ELASTIC MEMBERS (15B) ATTACHED UNDER TENSION THERETO. REGIONS OF THE SIDE FLAPS IN WHICH THE FREE EDGES OF THE FLAPS DEVELOPED IN A TRANSVERSE DIRECTION (B) OVERLAP THE ASSOCIATED LOWER ELASTIC MEMBERS ARE AFFIXED TO RESPECTIVE INNER SURFACES OF THE FRONT AND REAR WAIST REGIONS. FIGURE 1.
