Hunting requires precise vision, especially when glare from nearby water threatens to obscure your line of sight. The Costa Fantail Realtree Xtra Camo Polarized Sunglasses provide you with clear, high performance optics when you're scoping an incoming whitetail or waiting for waterfowl to fly overhead. These shades block 100% of harmful UV radiation, and they're polarized, cutting glare from water and shiny surfaces alike. The Costa 580 glass lens is a top shelf lens that filters out yellow and high energy blue light, effectively boosting color definition as it reduces haze on bright, sun washed days. In addition, this lens is 20% thinner and 22% lighter than average polarized glass, giving you lightweight performance for hours of comfortable wear.