These glasses are great. I have a large size head and require extra wide sunglasses. These guys foot the bill. Secondly, they surround my eyes enough do that there is very little light around the edges - in other words you have an all polarized view with no edges. Thirdly, these sunglasses are incredibly light. Fourthly, the optical clarity and definition us like nothing I have seen before. I can see every sand bar in striking contrast to the deeper water. I can easily see any bait fish in the surf or along a weed line. Buy these!!