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The Oakley SI M Frame® surpasses ANSI Z87.1 Industrial Standards for high-mass and high-velocity impact protection. Incorporating HIGH DEFINITION OPTICS® (HDO®) technology, lens geometry comes in five interchangeable lens shapes. All lenses are made of pure Plutonite®, a proprietary material that offers the highest level of optical clarity available in eyewear. You get razor-sharp clarity at all angles of view, which maximizes peripheral vision and protection against sun, wind and side impact.
- Shatterproof, scratch-resistant Plutonite® polycarbonate lenses can be replaced with other colors and shapes, sold separately
- Polar Ellipsoid™ lens shape eliminates distortion
- Hammerfang™ ear stems provide a 3-point fit to comfortably accommodate various head sizes
- Patented hydrophilic silicone earsocks and nosepieces become tacky when wet, so they won't slip when you perspire
- Prescription ready, the RX range is +2.00 - 4.00 total power and the cylinder must not exceed -2.00
- Prescription M Frames are available in a variety of lens colors
- Please note that all prescription M Frames come with a permanent visible insert