Like Ryan, I have like the Maui Jim's They are made for the water. They are divided into 3 parts. The center part is lighter than the upper, and lower. When out on the water you get reflection from above, and off the water. This is what is nice about the Maui Jims. They have added protection from glare, with out cutting off all light straight away. I went fot for for the Island Time. http://www.mauijim.com/islandtimes.html