Back Ultra Flex Front: 0.75mm lead equivalent Side: 0.35mm lead equivalent Optional prescription: single vision or bifocal Color: Black, red, purple/gray, silver, taupe Personalisation possible Contact us about this product A product by Shielding International Shielding International Related products BR310 BR310 Show product info BR331 BR331 Show product info BR322 BR322 Show product info BR119 BR119 Show product info