The Mt Shasta sunglasses from the Smith Optics Archive Collection offer a classic, refined cat-eye shape utilizing beautifully crafted cellulose proportionate materials with wire-core temples, three-barrel metal hinges, and Carbonic TLT lenses. sportglasses with fit and flair for the great outdoors. RELAX. You'll love this totally awesome, refined cat-eye frame shape. The Mt. Shasta can dress up an easy breezy weekend ensemble or make you standout while dining at your favorite breakfast club. The round retro vibe you'll project will remind your friends to be excellent to each other, and party on.