Chase the horizon with Costa's 6S9105 Tuna Alley PRO sunglasses, designed for life on the water. Crafted from durable nylon and propionate, the full-rim tortoise frames offer a bold, rectangular shape for sleek definition and style. These polarized sunglasses feature mirrored green lenses with advanced polarization technology to intercept reflections, cut glare, and enhance clarity — perfect for spotting fish or exploring under intense sunlight. PRO Series upgrades include an innovative vent system and six performance-driven features, making these shades as dependable as the coastal waters you love. Born on the water, built for pros who live to perform.