Abstract: This invention relates to a fastener for securing goggles tightly to a motor-cyclist's helmet.The fastener comprises a support 4 fixed to each side of the helmet, beside the face aperture, a removable stud-piece 5 having an off-center mushroom-headed stud 15 and a buckle 6 attached to the free end of one of the two elastic straps 2 of the goggles.The stud-piece 5 may be clipped into the support 4 either way round, to adjust the position of the stud 15. The buckle 6 prevents an aperture 21 which enables the buckle to be fixed onto the stud. One buckle 6 has a clip notch 22 which releasably maintains the buckle on the stud, while the other has only a circular aperture 21 to facilitate undoing the fastener.