Costas are the finest lenses you can get
Verified Buyer Reviewed by Whitewater from Virginia on Tuesday, October 14, 2014
No exaggeration just ask an ophthalmologist. The Costa lens is better optically than prescription sunglasses. I have had two ophthalmologists and an optometrist confirm this. The 580 lens take sunglasses to another level (great sunglasses only control light at 400) by controlling light in the 580 range. These fit me fine as I have a fairly narrow face. If you have a wide or round face you need to look for a Medium to Wide fit. These are my second pair of Costas. My other pair have the Copper lens and I ordered these in Dark Grey. The Copper while reducing bright light and glare increase definition while the Grey are more neutral and better in extreme bright light in my opinion. I used to buy Bolle and Ray Ban until I tried a friend's Costas on a fishing trip. I bought my first Costas as soon as I returned. I spend most of my time in the outdoors, hiking, backpacking, ww kayaking, and sailing. I consider these a mandatory item.