OSTA DEL MAR Frame Color: Shiny Black Lens Color: Gray Silver Mirror Lens Material: Polarized Plastic (580) The very best explorers know how to be resourceful in any situation. Built to champion that truth, Costa Copra sunglasses are perfect for a Voyager in hunt of a new stretch of water or an Angler who is chasing fish with a fly rod. Polarized, full coverage, scratch resistant, mirrored lens options, these Costa men's and women's sunglasses are the best fishing and adventuring sunglasses around and are perfect for any moment on the water and under the sun.