Crafted for those who thrive on the water, the Costa 6S9078 Blackfin PRO sunglasses are built to perform. The upgraded rectangle-shaped frames, made from durable nylon and propionate, deliver a clean and sleek look with full-rim definition. Costa sunglasses with polarized grey lenses intercept reflections and reduce glare, offering better contrast and clarity in challenging light conditions. Enhanced with advanced UVA/UVB protection, they protect against the sun's harshest rays. Designed with six innovative, angler-approved features, this green-fronted classic is made to keep you out exploring for longer. Born on the water, designed for bold adventures.