Costa Mayfly Polarized Sunglasses - 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 580 lenses were designed by in-house light spectrum experts to enhance colors because standard sunglass lenses fell short. The lens' multipatented technology manages light by: Absorbing Harmful High-Energy Blue Light (HEV) Enhancing Reds, Greens, and Blues Filtering Out Harsh Yellow