Smith Sunglasses Street Cassius is designed with a beautifully handcrafted acetate frame with adjustable wire core temples that ensure good eye coverage & long-lasting comfort on the slope at the beach or in any high light environment. The flexible & scratch-resistant CR-39 TLT lenses provide 100% UV protection & straighten out light rays so you see with 100% accuracy making them ideal for sport ANSI Z80.3 certified. New for 2005! Frame: Dark Tortoise Lens: Polarized Sienna Brown Syntro