Costa Del Mar Manta 580P Polarized SunglassesCosta Del Mar Manta 580P Polarized Sunglasses are excellent fishing sunglasses. With their TR 90 construction, Costa Mantas are extremely durable and lightweight. They have been infused with Hydrolite, a rubberized material that will keep these shades on your face, even when you have worked up a heavy sweat. The polarized 580P lenses deliver amazing clarity and brilliant colors, all while reducing eye strain and blocking the sun's harmful UV rays.