It is not often that a product rises to every expectation but this is one. I first saw these at a different location for about $150.00 more, so right up front these are a good deal. You can take these high quality glasses and tie them in a knot and they'll unfold perfectly. They can take a beating. High quality at every turn, dark, light weight and a good fit. You can get imitations cheaper but everyone will know and most of all you'll know every time you pull out more money to buy another poor quality pair that doesn't come close to these. Finally, this vendor rocks. They were immediately responsive and extremely helpful.