This invention is directed towards an apparatus for securing and adjusting a strap. More particularly, the present invention is directed towards a buckle assembly having a pivotable member pivotably attached to opposed regions of the buckle frame. In one embodiment, a sport-goggle assembly has a pivotable buckle assembly attached to one end of a strap. In another embodiment, a sport-goggle assembly has a pivotable buckle assembly attached to each of the two straps. In other embodiments, the pivotable buckle assembly can be used in association with a strap-lengthening member.