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 polarized bad boys on, with their integral hinges, patented vented system and tough-as-nails nylon material, you won't miss many. 8 base curve with 580G lenses. Black sunglass frames with polarized blue mirror lenses. Lens Size: 61mm/40mm. Temple Length: 115mm. Bridge/DBL: 13mm/10mm. Made in USA.