LenzFlip Polarized Lens Replacement for Ray Ban Justin RB 4165 54mm - Multiple Colors RB4165 N/A frame Polycarbonate- please note your original lenses may be glass while LenzFlip uses polycarbonate which is lighter and will not shatter lens polarized Lens width: 51 millimeters SCRATCH AND IMPACT RESISTANT POLYCARBONATE. Made from 100% polycarbonate material of the highest optical grade, providing superior scratch and impact resistance with outstanding optical clarity PRECISION CUT FOR RAY-BAN JUSTIN (54mm) SUNGLASS FRAMES. Please be sure to check the size of your frame as these will only fit the 54mm Justin frame POLARIZED LENSES. Polarized lenses eliminate 100% of glare-causing horizontally oriented light, providing crisp and clear vision through the lens 100% UV PROTECTION. Lenses have UV protection built within the polycarbonate material itself, providing complete protection from harmful UV rays that never wears off Please note these lenses are polycarbonate and not glass/mineral lenses which makes them lighter and impact resistant compared to most original Rayban lenses You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it! Scratch Resistant Exterior Coating Optical Quality Polycarbonate with 100% UV Protection High Efficiency Polarized Film Optical Quality Polycarbonate The entire line of LenzFlip lenses are polarized, providing users with glare-free vision. Compared to non-polarized lenses, polarized lenses eliminate 100% of glare-causing horizontally oriented light, providing crisp and clear vision. LenzFlip lenses provide the user with 100% protection from harmful UV rays that can damage the eyes over time leading to cataracts, wrinkles, macular degeneration and more. All lenses have UV protection built within the polycarbonate material itself, providing the user lasting UV protection that never wears off. LenzFlip is the brainchild of a group of sunglass enthusiasts and industry veterans that came together wanting to provide the best quality sunglass lens replacements on the market. Our lenses are obtained through exclusive arrangements with long established lens manufacturers that major brands are sourcing from today, and made from 100% polycarbonate material. There are several tests you can do to find out whether or not your lenses are polarized. The easiest is to hold one lens in front of the other and while looking through both of them, rotate one. At a certain angle they will black out, blocking all light transmission. Although our lenses do not have the words &#034;polarized&#034; etched into them, they are 100% polarized if advertised as such. To clean your lenses, do not use chemical cleaners or rough cloths. You can use the provided microfiber cloth to ensure thelenses will not become scratched or damaged.