Costa Del Mar Blackfin Polarized Sunglasses - Costa 580 Glass Lens

i love these glasses how ever i would like to point out that even though i bought these glasses as the new 580 lenses i received a pair with the older 400 lenses i am not to upset because with shipping and everything it averaged out to be about the same price as if i was to buy them at the exchange ....but i am still kinda disturbed at how they are mis advertising these awesome glasses

Let me start off by saying, this is my first pair of premium sunglasses. I was always one that just couldn't justify the price of the spendier sunglasses. I was always content with a $20 pair from walmart. Well a buddy Turned me on to these and after hemming and hawing for a bit I decided to try them. The real impetus to try the costa's came after working outside all day in cheap sunglasses and going home with a splitting headache.
Since I've gotten the costa's I have not had that issue. The glasses are polarized. I got the 580 polarization which is their top polarization. Which basically means it filters out the harmful light spectrum.
Whatever it does, it works. I've got good vision through the lenses, the glasses are well constructed, nothing has loosened up on them yet. The best part is lifetime warranty.
Bottom line, if your on the fence about cost, try em out and compare to cheaper sunglasses. If they don't impress you send em back.

I'm not a big fan of paying this much for sunglasses and bought these for a Christmas present. The title of the Amazon item is for GLASS lenses - these are Polycarbonate lenses... I can not say how the product is, but I am very disappointed in the fact that I was expecting GLASS lenses and these are plastic. So - be aware of what you are ordering. Once the person who receives this as a gift gives me feedback on the actual product, I will post. Just know that these are NOT GLASS LENSES.