With 12 different river systems less than an hour's drive from town, it's no wonder New Zealand's Reefton is world-renowned for its freshwater fishing. These size large frames are the perfect companion to explore any body of water and will stay put on larger heads under any condition thanks to their co-molded temples, Hydrolite nose and temple pads, and cam action spring hinges. All Costa lenses have 100 percent UV blockage for maximum protection and 100 percent polarization to kill reflected glare. Our 580 technology goes beyond polarization to produce the clearest lenses on the planet. Costa Sunglasses are of high-end polarized sunglasses for use in water sports such as fishing, sailing, and surfing. They are specially designed to help offset the particular characteristics of light on water, Sunglasses built to perform, featuring our latest 580 lens technology. The clearest fishing sunglasses on the planet created by Costa Del Mar.