Disposable shaped nappy comprising a water-impermeable outer sheet (2), defining a narrower crutch area (27) between the two wider ends or waistband areas (28, 29), an absorbent pad (22), securing elements (24) for attaching the nappy, and elastic elements (4) tensionally secured to the water-impermeable sheet (2) on either side of the absorbent pad (22), substantially on all the length of the water-impermeable sheet. The elastic means have a higher tension in the crutch region (27) than in the end areas (28, 29), and have, in the latter (28, 29), sections (4c) converging in the direction of the transversal edges of the water-impermeable sheet, so that the elastic elements (4) form a virtually closed elastic barrier around the absorbent pad (22), thereby providing a water-impermeable sheet which is longitudinally elastic in the crutch area and transversally elastic in the ends.
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