Bajio Sunglasses Darien Dark Brown Tortoise Gloss Green Mirror GlassNamed after the treacherous river that feeds into Pias Bay this frame was built for spotting bait balls from the bridge of a classic Bertram. If you're throwing flies at sailfish, marlin, or dorado, this is the frame you'll want in your bug out bag. Wide temples for focus, full wrap for coverage, and rubber nonslip grip for sliding down the tower while chasing blitzing tunas.