These sleek High-Definition Optics® virtually eliminate visual distortion for the highest degree of clarity and unobstructed peripheral vision. Deigned using 3-D sculpting, these frames and crafted of ultralightweight C-5™ alloy with custom spring hinges for close-fitting comfort. Unobtanium® stem sleeves guarantee they won't fall off when the heat is on. Made with adhesives and thermal shaping. Plutonite®, Oakley's proprietary polycarbonate lens material inherently blocks 100% of all UVA, UVB, UVC and harmful blue light. Durable, lightweight Plutonite provides protection against high-mass and high-velocity impact, exceeding the ANSI Z87.1 performance requirements of the American National Standards Institute. A Hydrophobic™ permanent coating maintains a smudge-resistant barrier against skin oils, lotions and sunscreens, and it even repels dust. Optional Iridium® lens coating maximizes glare reduction.