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 the reputation for creating the best performance eyewear on the water, Mayfly is made to improve every experience.

Costa advanced fly fishing polarized sunglasses are handcrafted for life on and off the water. Built to be expedition tough with lenses that eliminate glare and reduce eye fatigue by preventing the eye from absorbing the horizontal wavelengths of light reflected by water. Costa Del Mar sunglasses offer superior design, the highest quality manufacturing, and the best-polarized lenses on the planet.