In nature, a King Tide requires the perfect alignment of Earth and moon to create once-in-a-lifetime views and opportunities for anglers. Like their namesake, the King Tide 8 is designed to give you the ultimate advantage on the water. Made for elite anglers that demand the most from every cast, the King Tide 8 features a full wrap with removable side shields for optimal viewing on and off water. Shark-inspired venting achieves a near impossible zero-fog effect. Top of the line sweat management and drains keep your view dry and unobstructed. Non-skid hooding means they stay in place on any surface wet or dry. All this has made King Tide 8 the crowning achievement of Costa’s 40 years on the water, utilizing the research and innovations from every frame that came before it. Premium Polarized 580 Lenses:- Filtering reflective glare is essential for anyone on the water or outdoors. We sell only polarized sunglasses.100% UV Protection:- Your Costas absorb 100% of UV light, providing you the best in light management and protection.Scratch Resistant and Durable:- The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning.Features:- Frame fit: Wide- Lens curve: Base 8 Decentered - Lens material: Polarized Glass (580G)Technology:Copper Silver Mirror:- Well-suited for stream fishing and other environments with varying light.- 12% light transmissionOptimal usage:- Excellent for sight fishing- Everyday activities- Most versatile- Cloudy daysCosta 580® lenses:- Costa 580® lenses were designed by in-house light spectrum experts to enhance colors because standard sunglass lenses fell short.Superior clarity & Scratch-resistance:- Glass Provides The Best Clarity In Material- Encapsulated Mirrors (Between Layers Of Glass) Are Scratch-Proof- 20% Thinner And 22% Lighter Than Average Polarized Glass