It can earn 5 stars easily but time will tell. Maybe I am the lucky one received a batch of good lens. I almost return them when I read some negative comments saying is is not polarized lens. But I did a test on my own comparing them with a polarized Ray-Ban I own. It is an authentic one purchased from Ray-Ban company. 8 out of 10 pairs work just a bit shy of Ray-Ban but totally 98% as good. The other two are brownish color ones does work as well, I say 60%. Maybe is the color.I will raise its rating to 5 stars if it holds up the scratch test after couple months, or lower to 3 if it goes the other way. But I will treat them right by cleaning it with lens cleaning clothes or equivalent, not paper towel or handkerchief.I love the variety of lenses so that you will never get tired of wearing them.Price worthy!Needed a good pair of clip-ons when driving against the morning/evening sun. This fit perfectly. Easy to put on/off , dark enough to stop the squint. Pack of 10. So even if you misplace one, there are always others as backup.Reduces eye strain, and tiredness. After a long drive, i dont feel the eye fatigue. If you dont have a pair of shades for those who have eye power, would recommend something like this.They are perfect for over the glassesI wear reading glasses and always had to switch between them and regular sunglasses. Now I can wear these over them and not worry about changing glasses. The colors are great! I've only seen in the past clip on/flip ups in gray, yellow, amber and the are unique with various colors and mirrored lenses. They are built sturdy with a nice spring action for the flip. I can change these to match my outfits and glasses frame colors. I own 60 pairs of reading glasses and these will compliment all of the frame colors. They fit well over the lenses so no external light comes through the sides or bottom. WELL DONE! The seller ships fast and these were very well protected in shipment!Fit good.just measure your glassed to determine its sizeRidiculously low price when compared to any retail option, and just as good quality.Muy prácticos sobre todo para los que usamos lentes con graduación la gran variedad de filtros son verdaderamente funciónales a bajo costo genial