Abstract: A fastener assembly comprises a frame element having a pair of sides and a shaped opening extending between the sides. The assembly also comprises a clasp having a base and a pair of arms extending from the base. One of the arms is an attachment arm having a release hole and an attachment hole for receiving a strap. The other arm has a detent that fits within the opening of the frame element when the arms are placed adjacent the sides of the frame element.

Abstract: Foldable eyeglasses having a first frame holding a lens and a second frame for holding a lens. The first frame has a first leaf and a second leaf with a predetermined space therebetween. At least one of the first or second leaves has a protrusion for locking the first frame to the second frame. The second frame has a third leaf with a complimentary detent for engaging the protrusion of the first frame. The first and second frames are rotably mounted together by a hinge allowing rotation about an axis extending through the first, second, and third leaves from a folded position wherein the frames are folded together to an open position wherein the third leaf rotates into the space between the first leaf and the second leaf and the protrusion engages the detent to lock the frames together.