Like its namesake, Mayfly is elegant, diverse and versatile. She exudes an oversized look and water-ready features for your complete enjoyment under the sun. The boldly femme, cat-eye design offers maximum light blockage and a wider field of view, and fully adjustable, textured and vented nose pads ensure a secure fit and helps keep lenses fog-free. With eyewire drains and channels, water and sweat will stay away from your eyes and keep you focused on the next adventure. Continuing our reputation for creating the best performance eyewear on the water, Mayfly is made to improve every experience. Costa's 580 lenses are designed in-house by light spectrum experts to enhance colors thanks to multi-patented technology that absorbs harmful high-energy blue light (HEV), enhances reds, blues, and greens, and filters out harsh yellow. The 580 lenses are also scratch resistant, and and 20% thinner and 22% lighter than other polarized lenses on the market. Features:580 lenses: Scratch resistant and enhances clarity20% thinner and 22% lighter than other polarized lenses on the market Costa Mayfly Black Frame Sunglasses w/Copper 580P Lenses 06S9110-91100358