A hook and eye fastener for securing two pieces of a garment together, the hook part being mounted on a face of one of the pieces and the eye part being mounted on a face of the other of the pieces, in which: the hook part comprises a substantially planar body laid flat on the face of the piece and having an arm extending outwardly from the body, the arm comprising an inner portion connected at one end to the body and extending outwardly substantially perpendicular to the body and an outer portion connected to the other end of the inner portion and extending substantially parallel to the planar body, the side of the outer portion facing towards the planar body defining a hook part abutment surface; the eye part comprises a substantially planar frame laid flat on the face of the other of the pieces; the frame defining an open mouth with a circumferential lip, the open mouth dimensioned to receive the outer portion of the hook part's arm and having a complementary eye part abutment surface on the underside of the frame for engagement of the hook part abutment surface, and, with the faces of the garment pieces touching or closely juxtaposed, the eye part is slidably engageable in a direction parallel to the faces of the garment pieces with the hook part to bring the hook part abutment surface and the eye part abutment surface into engagement with each other and fasten the two pieces of the garment together; and in which the open mouth of the eye part comprises a slot (17, 19) formed in the lip along a leading edge thereof, and the hook part comprises a divider wall (41, 43) located on the underside of the arm for engagement in the slot formed in the lip of the eye part, the divider wall extending downwardly and substantially perpendicular from the hook part abutment surface of the outer portion of the arm and forwardly and substantially perpendicular from a front surface of the inner portion of the arm; characterized in that there are provided a pair of spaced-apart slots (17, 19) formed in the lip along a leading edge thereof and a pair of spaced-apart divider walls (41, 43) located on the underside of the arm each for engagement in a respective slot formed in the lip and in which the pair of spaced-apart slots (17, 19) and the pair of spaced-apart divider walls (41, 43) are spaced evenly about either side of the centre of the leading edge of the lip and the outer portion of the arm respectively. the hook part comprises a substantially planar body laid flat on the face of the piece and having an arm extending outwardly from the body, the arm comprising an inner portion connected at one end to the body and extending outwardly substantially perpendicular to the body and an outer portion connected to the other end of the inner portion and extending substantially parallel to the planar body, the side of the outer portion facing towards the planar body defining a hook part abutment surface; the eye part comprises a substantially planar frame laid flat on the face of the other of the pieces; the frame defining an open mouth with a circumferential lip, the open mouth dimensioned to receive the outer portion of the hook part's arm and having a complementary eye part abutment surface on the underside of the frame for engagement of the hook part abutment surface, and, with the faces of the garment pieces touching or closely juxtaposed, the eye part is slidably engageable in a direction parallel to the faces of the garment pieces with the hook part to bring the hook part abutment surface and the eye part abutment surface into engagement with each other and fasten the two pieces of the garment together; and in which the open mouth of the eye part comprises a slot (17, 19) formed in the lip along a leading edge thereof, and the hook part comprises a divider wall (41, 43) located on the underside of the arm for engagement in the slot formed in the lip of the eye part, the divider wall extending downwardly and substantially perpendicular from the hook part abutment surface of the outer portion of the arm and forwardly and substantially perpendicular from a front surface of the inner portion of the arm; characterized in that there are provided a pair of spaced-apart slots (17, 19) formed in the lip along a leading edge thereof and a pair of spaced-apart divider walls (41, 43) located on the underside of the arm each for engagement in a respective slot formed in the lip and in which the pair of spaced-apart slots (17, 19) and the pair of spaced-apart divider walls (41, 43) are spaced evenly about either side of the centre of the leading edge of the lip and the outer portion of the arm respectively.