therewith bringing those parts of the liquid pervious sheet 4 u2032 that lie on respective sides of the longitudinal symmetry axis into abutment with each other and then clamping together the folded napkin within the region of the cut out 7 u2032 thereby joining together the mutually facing sides of the folded napkin within said region of the cut out 7 u2032 fig4 shows the napkin in its folded state the sides of the folded napkin are then folded back so that the underside of the napkin i e the side to be fastened to the inside of a pair of panties is returned to a generally flat state whereafter the protective layer 6 u2032 is removed and the napkin is placed in position in the wearer 39 s panties when the sides of the napkin are refolded those parts of the folded napkin fastened within the region of said cut out will remain folded so that a pleat 12 whose height corresponds to half the width of the cut out will remain after the napkin has been refolded fig5 and 6 show the sanitary napkin 1 u2032 with the protective layer 6 u2032 removed before placing the napkin in position in the wearer 39 s panties with the liquid pervious and liquid impervious sheets facing towards the viewer as will best be seen from fig6 the napkin includes a ridge part 12 which projects out from that side of the napkin 1 u2032 which lies proximal to the wearer 39 s body in use said part 12 having been formed by folding and refolding the napkin the height of.