I put the PRIZM Deep Water Polarized XLJ Lenses on my Flaks, and I am probably not going to change them EVER. These are great lenses for any sunlight conditions. I bought a backup pair in case Oakley stops making them for our Original Flak Jackets. Unless Oakley comes up with cooler lenses down the line, I think that I have found the perfect lenses for me. Deep Waters are really great. I walked out on our breakwater on Lake Erie to chenck out their capabilities. Lake Erie is really clear thanks to the Zebra Mussel cleaning it up. I could see some big Brown Trout probably ten feet down with no trouble. They do function as-advertised. Nice lenses Oakley!