Bloc Eyewear Miami Tort Diam Sunglasses (BG12 Brown Grad/ Cat 3 Lens) Description: A sophisticated look with lots of diamantes for that truly glamour feel. Conforms to EU Standard BS EN 1836: 2005 + A1:2007 Lens: BG12 BROWN GRADUATED CAT.3 Karbon 8 Optical Class One lens provide MAX UV protection. Distortion free & virtually indestructible. Frame: BLOC frames utilises tough & compliant KARBON TX Percent core injected frames & are hand finished. They are flexible lightweight & designed for comfort fit & performance. The optical class hinges offer both quality & durability.