Stretchable leg cuffs (12) are put around the legs of a wearer without little gap, whereby liquid leakage around the legs can be prevented. Elastic bodies (30) are extended on side flaps (10) formed of a back sheet (9) along lengths of side flaps (10). Stretchable leg cuffs (12) for encircling the legs of a wearer are extended further outward from the side edges of the side flaps (10) along the lengths of the side flaps (10) on the side of the top sheet (7) of the absorbent body (2).
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