With these incomparable polycarbonate lenses, we have created the perfect glasses for fly fishing. These optically superior glasses with 100% UV protection and polarized high impact lenses provide maximum eye safety and comfort. HiDefspex performance optics. Designed specifically for fly-fishing, Filson's fishing glasses have an anti-fog technology and an anti-reflective coating that offers the best vision when you are on the water. Made in USA.