From Maui Jim, the USA Cliff House sunglasses feature: pure titanium frame is lightweight, durable and comfortable double bridge bridge with adjustable, non-slip silicone nose pads anti-corrosive traditional hinge HCL® Bronze lens for everyday variable conditions, from full sun to overcast; provides excellent contrast and a warm, subtle bronze tint PolarizedPlus®2, a patented, color-infused lens technology that wipes out 99.9% of glare, 100% of harmful UV and boosts color via specially designed lens treatments Maui Evolution® lenses that fuse the best properties of SuperThin glass and polycarbonate gloss finish with CLEARSHELL® scratch coating, a proprietary, silicone-based hard coat that protects your lensesImported.