Costa Ferg XL Shiny Gray Frame 580G SunglassesProduct Description. Costa has always been about bringing the best innovations to waters all over the world. The frames bearing the name of our founder, Ray Ferguson, are full of them: top hooding and side shields, integrated textured Hydrolite rubber, adjustable nose pads and our polarized 580 color enhancing lens. And now this legendary design comes in a nearly 5% larger size, so everyone can sport it comfortably. The Ferg now and always, nothing