Costa Del Mar Loreto 580G Polarized SunglassesCosta Del Mar Loreto 580G Polarized Sunglasses are great fishing shades! These aviator style sunglasses are constructed of Monel, making them lightweight yet strong. The polarized 580G lenses deliver amazing colors, excellent clarity and reduce eye strain, all while blocking the sun's harmful rays. Costa uses an integral hinge on these glasses that will keep returning to the same position time after time. Costa Loretos look good and they perform even