One of our most popular frames, Calcutta&';s Sancho sunglasses will make a powerful style statement no matter where your adventures take you. Sancho Sunglasses Features: 100% UV protection Corrosion resistant polarized lenses with extra lens coating to reduce mirror lens flaking 1.0mm Triacetate (TAC) polarized lenses Fade-resistant frame Integrated hinge will stand up to repeated use Authentic Calcutta logo 1 year limited warranty (Formerly Shock Wave frame)