Every pair of Costa Fantail 580P Polarized Sunglasses is geared for on-the-water action with high-performance polarized lenses. The Fantail's LightWAVE polycarbonate lenses provide 100% UV protection plus unmatched clarity, contrast, and definition. They're so lightweight, you may forget you're wearing shades. Costa 580 technology takes lens performance to new heights by eliminating glare from yellow light, blocking blue light to minimize haze and blur, and boosting red and green for deeper colors and sharper contrast. The 580 lenses also feature both a water-repellent coating and an anti-reflective coating. TR 90 nylon frames have an integral hinge frame design and co-injected Hydrolite temples for a secure fit, letting you focus on more important matters. Frame fit: M-L. Includes a manufacturer's limitedlifetime warranty and a hard case. Provides 100% polarization and UV protection, minimizing glare and visual fatigue Polycarbonate lenses are lightweight and impact-resistant Co-Molded technology for maximum durability and comfort True 580 Technology blocks yellow and blue light while boosting red and green light Lenses feature 8 base curve for maximum coverage TR 90 nylon frames Megol nose pads for grip Hydrolite provides comfort and grip from the temples Frame fit: M/LManufacturer's limited lifetime warranty About your Costalenses: Amber Excellent all-around lens delivers the brightest field of vision. Gray Maintains color saturation and natural contrast in medium to bright sun conditions. Green Mirror Encapsulated mirrors enhance visual acuity and eliminate glare (copper and amber base).