light weight and clear lense.Overall- these sunglasses are about what you’d expect from a $20 pair of shades at your typical retail outlet. They look nice, but the quality is pretty bad. The actual tint is pretty weak, so they don’t block much light and the fit and finish is not good- mine sit noticeably crooked on my face. The only positives are:1. They look nice (if they weren’t crooked)2. Come with a nice hard zipper case3. Very inexpensiveIf your ultimate budget is under $20, then yeah, these are okay. Personally, I’d rather spend double that price on something that actually blocks some light and fits reasonably well. As far as the longevity goes- I can’t speak to that. I got them today and will be sending them back tomorrow. These are packaged extremely carefully to ensure you are happy. They are great quality for the price and in fact polarized. They are slightly darker than I would like but that is personal preference. Purchasing these also helps others and I highly recommend these sunglasses.