SPY Optic Emerson Sunglasses for Men and for Women | Optimal Clarity Shatter Resistant Lenses | Great Unisex Style with Patented Detail Boosting Happy Lens&trade; Tech | Great for Outdoor Activities Polycarbonate Imported Plastic frame plastic lens non-polarized Lens width: 59 millimeters INGENIOUS & ILLUSIVE: Its the quiet ones you have to look out for, especially when youre referring to ones like the Emerson. With a subtle, yet bold design and strong metal details, the Emerson makes a statement by not being overstated. Features include the Happy Lens, handmade acetate construction, and a premium leather leash PERSONALIZED PROTECTION: 100% UV eye protection effectively filter and block glare to protect your eyes and provide optimal visual comfort. Spy Optic lenses make a big impact in the comfort of your sunglasses by reducing glare and protecting your eyes from eye strain that typical lens cant reduce TOUGH STYLE: All Spy Optic sunglasses are designed to be lived in and are tested by world class athletes around the world. Emerson Sunglasses will stand up to any challenges you throw at them, the lenses are shatter resistant and the durable frames and hinges are made to last. Take these glasses anywhere with you HAPPY LENS TECH is the only color and contrast enhancing lens on the market that harnesses the beneficial aspects of long-wave blue light while offering protection from damaging short-wave blue light. Long-wave blue light helps you see better by enhancing color, contrast, and clarity, making colors more vivid and surroundings more defined. Once you try Happy Lens youll never go back SPY OPTIC is an unconventional, fun-loving family of athletes and artists committed to creating exceptional optical products. Established in 1994, we are an independent Southern California- based company. We design products that take style cues from the outdoor sports community were ingrained in, as well as the lifestyle that surrounds it. We know youll love this SPY product