Costa Del Mar Fantail Pro Polarized Sunglasses

Costa del Mar Fantail Pro polarized fishing sunglasses use Costa's 580G glass lens technology — the highest-performing lens in Costa's lineup, combining superior glass optical quality with Costa's proprietary 580 filter that blocks high-energy visible light at 580nm while enhancing contrast in the color channels that matter most for seeing fish and reading water structure. The Fantail Pro is the performance version of Costa's most popular fishing frame, adding co-injected rubber grip points and a wider temple coverage for reduced peripheral light intrusion.

What the 580 Filter Actually Does

High-energy visible (HEV) light at 580nm produces the harsh blue and yellow scatter that makes water surface glare so visually fatiguing and obscuring. Costa's 580 filter eliminates this specific wavelength while transmitting enhanced green, red, and brown channels — the spectrum where fish coloration and bottom contrast are most visible. The result is that the water appears clearer, fish are more visible at depth, and the visual fatigue of hours on the water is reduced compared to standard polarized lenses.

• 580G glass lens — Costa's highest-performance lens with glass optical quality
• 580nm filter — eliminates HEV glare while enhancing fish-visibility color channels
• Co-injected rubber grip — stays in place during physical activity and sweating
• Wide temple coverage — reduces peripheral light intrusion
• Costa lifetime warranty — repair and replacement coverage

Glass vs. Polycarbonate (580P) for Fishing

Costa's 580P polycarbonate lenses are lighter and more impact-resistant. 580G glass lenses provide sharper optical clarity, superior scratch resistance over time, and better contrast in the critical water-reading scenarios where the optical difference between glass and polycarbonate is most noticeable. For guides and serious anglers who use their sunglasses daily for years, 580G glass is worth the additional weight and premium.