the respective second lower sheets 32 b extending outward beyond the respective outer side edges 42 of the lateral cores 37 are folded inward and form parts of the respective barrier cuffs 21 cover sheets 49 made of a nonwoven fabric are bonded to the lower surfaces of the respective second lower sheets 32 b each of the cover sheets 49 is folded inward along a top edge 51 of the barrier cuff 21 and extends to a proximal edge 52 of the barrier cuff 21 so as to form inner and outer surfaces of the barrier cuff 21 each of the barrier cuffs 21 contains an elastic member 54 inside its top edge 51 and an elastic member 56 inside its middle 53 defined between the top edge 51 and the proximal edge 52 these elastic members 54 56 extend in a stretched state in the longitudinal direction as viewed in fig4 and are bonded intermittently in the longitudinal direction to the inner surface of the cover sheet 49 by means of hot melt adhesives not shown in a vicinity of the outer side edges 42 of the lateral cores 37 the crotch elastic members 46 are interposed between the second lower sheets 32 b and the cover sheet 49 the first and second crotch elastic members 46 a 46 b constituting the crotch elastic members 46 underlie the respective lateral cores 37 and extend parallel to the longitudinal center line.