Features:- Mainsail XL is a direct size extension of one of our best-selling Hybrid Frames, Mainsail, providing a broader reach of water explorers the same functionality, versatility and aesthetic they’ve come to love. Micro side shields and hooding provide a heightened level of coverage, minimal light leak and protection from the elements. Vented nose pads increase ventilation across the frame, reducing the risk of fogging. Retainer ready temple tips allow users to affix any retainer of their choice to ensure their frames aren’t lost while exploring.- 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.- Frame color: Matte Black.- Lens color: Blue Mirror.- Lens material: Polarized Glass (580G).- Green Lens.- Enhanced vision and contrast for fishing inshore and on flats.- Copper Base- 10% light transmission