BEWARE: Costa changed their warranty conditions in year 2020. They would not replace a chipped pair of sunglasses after only (3) three months of use claiming it was not a manufacturers defect. It's now their opinion whether something is a manufacturers defect or not.I bought the exact same fathom 580Gs at a Costas store at a local mall about 3 years ago and I love them. I treated them pretty rough and the glass was getting pitted from several drops on hard surfaces so I wanted to replace them. I priced them at the same store I bought my old ones and they were $100+ more than these. I was a little skeptical that these were authentic Costas at this price. Figured if they were fakes, I could return them. We'll, they are the real deal. Exactly the same as my old ones in every way. Shipping was fast and they came with the black Costa logo case, cleaning cloth, and all the paperwork. This is a great value for authentic Costas. I would definitely buy again.Costa makes the best shades in the $100-$200 neighborhood. They have mega-pairs to choose from to embrace any desired styling. You will find correct form, fit, and function in spades, without reservation.At Costa, they KNOW how to mate the frames to your face so they won’t be sliding off during perspiration or athletic action. The hybrid materials are super light, flexible, and very strong. But then - let’s consider those lenses....The coating options to choose from are right on the money. To say “UV filtering, haze cutting, glare killing, and scratch resistent” - doesn’t do them justice!10 years ago, I decided to spring for a gorgeous Costa Del Mar set of frames; sporting a set of Blue Mirror glass lenses in the 580 coating - just for fishing from my Hydra-Sports, out on the bay.I figured “only in glass” could I experience the very best lenses. So I got the 580g’s. I still have that pair and they remain as beautiful as day 1.But then just last week I saw these - here on Amazon - and thought what super fine lightweight “drivers” they would be, getting 580’s again - only in the polycarbonate! And I was SO RIGHT!These are the sweetest shades I own!!! But I also learned something else - the clarity, filtering, and overall superior quality I have in my other pair - with the glass lenses - is also present - 100% - in the 580p lenses, only these are lighter!Whether you share my taste in this particular frame style or like something else - don’t be afraid to get the polycarbs! Exquisite lenses in either material - but the polycarb set is so light, you might forget that you are wearing shades!You will not be disappointed if you get these glasses 100% the best on the market!!I love fathom costa sunglasses. Due to availability I selected the green tint. Normally I utilize the blue tint. I feel the blue provides better lens protection. Overall great sunglasses.Love them except on the frame the screw is stripped and comes lose. May have to contact Costa.These glasses are great for fishing and for clay target shooting!! Makes the orange targets glow!! The glass lenses are heavier but the toughness makes them the only choice!!Had these shades before and had lost them while fishing years ago , and though I would never be able to find these shades again ! Thanks to Amazon I found my favorite shades again and now don’t have to worry about my shades scratching and having to replace the shades after 2 years of scratched up lenses . !