I bought a 2 pair box of sun glasses at big lots, liked the vision they provided. so I bought 2 more pair so I would have a pair in the truch,car & on my Harley, much to my surprise after 4 or 5 times wearing them they started to break, the hinge is so thin it breaks right at the screw I know have 3 broken pairs and the 4th pairare on my dash but I don't wear them I know they will break these are CHEEPLY MADE good reduction of eye strain and sun protection but the temple hinges are to thin and not strong enough to last even 2 weeks