On a related note, the side rubber things... i learned are called "temple socks" or at least that is what rayban calls them, my fiance lost a "sock" a while ago on raybans 3179, i know the model number cuz i've tried searching for it, these glasses retail for 100bucks or so, give or take, and i could ONLY find replacement socks ordering from the uk for basically 30bucks...
Now it was either order a new pair of the same glasses for 100bucks or order the socks for 30 bucks..., of course she doesn't wear these glasses cuz without the socks she gets irritated and they just gather dust and really likes these model number glasses.
so... 30bucks for temple socks, oh and before putting them on, i put 2 drops of gorilla glue on em of course, this way i'll never have to worry about temple socks and only if she looses or destroys the glasses.