Taking a road trip to Mount Shasta' Be sure to take along the Smith Mt. Shasta Sunglasses. The carbonic TLT lenses give you optimal clarity, while the polarized technology cuts down on glare, just in case you decide to stop at all those scenic overlooks along the way. The cellulose propionate frame is not only lightweight, but durable, making these sunglasses the perfect hit the road companion. The adjustable wire core temple gives you a comfortable, custom fit. And the barrel hinges make sure these glasses stay in place when you race to get a photo op, once you finally reach your destination.