Limited Edition Polarized X Squared Sunglasses - We took X Metal all the way with this latest creation. Oakley X Squared continues a legacy of invention by blending lightweight titanium alloy with some of the most advanced technologies ever to hone light rays. This is how originality gets aggressive, and the look is not for the uninitiated. It s for those who defy the architects of life and put up their own blueprint. Oakley X Metal is the only 3-D sculptured, hypoallergenic, all-metal frame family on Earth. The strength-to-weight ratio is phenomenal and the feel is surprisingly light. Resilient flex couplers allow the frame to fit comfortably around the head. Unobtainium components actually increase grip with sweat as they provide the contact zones for a Three-Point Fit that holds the lenses in precise alignment. The optical performance of X Squared is what you would expect from Oakley. First off, the lenses are made with Oakley Hydrophobic /Oleophobic technology, a performance coating that lets water slide off to help keep your vision clear. It also fights smudges from skin oils and lotions. The lenses themselves have a full 8.75 base curvature with the clarity of patented XYZ Optics , a benefit of High Definition Optics (HDO ) Our Plutonite lens material filters out 100% of all UV. The lens/frame combination achieves impact resistance that meets ANSI Z87.1 standards for high mass and high velocity. You have a range of lens choices to choose from, including Oakley HDPolarized options that eliminate 99% of reflected glare. Our Iridium lens coatings further reduce glare while balancing light transmission. You can even get this frame with Oakley Authentic Prescription Lenses and you can choose anything from clear lenses to performance sun hues with premium coatings. Lens: Oakley HDPolarized -Minimized glare via technology that produces the best polarized lenses on the planet with greater than 99% polarization efficiency Optimized peripheral vision and side protection of 8.75 base lens curvature Optical precision and impact resistance that meets or exceed Z87.1 optical and high impact standards Comes standard with Oakley Hydrophobic /Oleophobic anti smudge lens coating on all lens options UV protection of Plutonite lens material that filters out 100% of UVA/UVB/UVC & harmful blue light up to 400nm Patented XYZ Optics for maximum clarity at all angles of vision Glare reduction and tuned light transmission of Iridium lens coatings (optional) Available with Oakley Authentic Prescription Lenses Frame: Oakley X Metal : the only 3-D sculpted, hypoallergenic , all metal frame on earth Lightweight Titanium alloy with phenomenal strength-to-weight ratio and rugged durability Internal flex couplers allow flexibility for precise fit Patented hydrophilic Unobtainium earsocks and nosepads ensure a snug, secure fit Comfort and performance of Three-Point Fit that holds lenses in precise optical alignment Accessories Included X-Metal Collector’s Edition Coin Als