Features of the Costa Del Mar Tuna Alley Pro Polarized Sunglasses The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning. Your Costas absorb 100% of UV light, providing you the best in light management and protection. Filtering reflective glAre is essential for anyone on the water or outdoors. We sell only polarized sunglasses. Fully-adjustable, nonslip nose pads were designed to further customize your Fit and help reduce fogging. Lens Material: Polarized Glass (580G) Frame Fit: Regular Size: L Nosepad Adjustable: Yes Lens Curve: Base 8 Decenetered