At the right time of year, from this legendary 15-mile long white strip of sand separating the deep blue Bahamian waters from the shallow bank of Gun Cay, you can spy tons of Bluefin tuna, migrating north. And with these bad boys on, with their integral hinges, patented vented system and tough-as-nails nylon material, you won't miss many. 100% polarization kills reflected glare and reduces eye strain. Eye size: 62; Frame: Matte Black; Lens: Blue Mirror 580G; Lens Material: Polarized Glass