Built with Costa's 580A(R) lens technology, the Tailfin cuts glare, sharpens detail, and enhances color definition across both land and sea. The lightweight bio-resin frame offers lasting durability and a secure fit, while hydrolite nose and temple pads ensure stability during active use. The gray lens tint improves visibility and depth perception in soft light conditions-ideal for coastal pursuits, road trips, or relaxed outdoor wear. Specifications: Frame Color: Seagrass Lens Color: Gray (Polarized 580A(R) lens technology) Frame Material: Bio-resin for eco-friendly durability Fit: Medium/Large Lens Advantage: Enhanced contrast and clarity in low-light or variable-light environments Use Case: Fishing, boating, hiking, everyday adventure