Tortoise frame with blue or green mirror lens. From the Atlantic to the Pacific Cross offers 100% UV protection while improving vision clarity. Cross 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 (Formally Permit frame)