Bifocal Lens – A nylon lens with the addition of a bifocal reader. Nylon is an extremely tough and impact resistant material that is also quite flexible, Polarised Lens - Eliminates harmful UV rays and glare to reduce squinting. Also enhances colour and visual clarity, Maximum UV Protection – Category 3, Anti-Scratch Lens Coating - strengthens and protects the lens making it highly scratch resistant whilst also extending the life of the lens, Anti-Reflective Lens Coating - filters glare from angles the sunglass cannot cover to further reduce squinting and provide enhanced polarisation, Hydrophobic Lens Coating - provides salt water resistance for up to 72 hours, perfect for when you’re at the beach, relaxing pool side or out for a spot of fishing, TR-90 Frame - Highly flexible and light weight, includes Microfibre Cleaning Pouch and Sports Zip Hard Case