Costa Del Mar Grand Catalina 580G Glass Polarized Sunglasses brings back an icon in the 1980's Costa lineup. The Grand Catalina has an almost aviator-like shape thanks to its teardrop lenses and vented bridge. The spring hinges' removable side shields block more peripheral light so you can focus purely on performance. Sweat management channels and vented, adjustable nose pads keep you cool and dry on hotter days. Injected-nylon frames and 580G LightWAVE glass lenses keep these sunglasses lightweight. Those exquisitely crafted glass lenses offer extra clarity especially compared to their plastic counterparts and are polarized to fight glare reflecting off the water and other surfaces. Styles with mirror lens coatings reflect even more glare. These Costa Del Mar sunglasses have scratch- and impact-resistant lenses.Manufacturer style #: 580G. 580G LightWAVE glass lenses for extra clarity and reduced weight Scratch- and impact-resistant lenses Polarized to fight glare Styles with mirror lens coatings reflect more glare Removable side shields block more peripheral light Sweat management channels Vented, adjustable nose pads Spring hinges Lightweight, injected-nylon frames