At Costa, innovation is a way of life. Always looking for the next wave, the next catch, or the newest technological advancement in sport performance sunglasses, they never stop reaching. Costa's Diego frames utilize some of the most cutting edge features available on the market today. With a state-of-the-art vented spring hinge system to maximize airflow and enhance the fit, and sweat management channels that actually wick away moisture to keep you cool, these sunglasses are nothing short of an angler's best friend. Polarized, 100% UV Protection lenses keep your view sharp and the top and side shield details eliminate any light leak that might get in the way. And as always, every pair of Costa sunglasses comes with a Costa Case, cleaning cloth, and manufacturer's Limited Lifetime Warranty.