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.
M frames are getting very hard to find. TG had what I wanted at a reasonable price and got it to me quickly. I was very pleased with the service, selection, price and delivery. Good job!
It is possible to use any Oakley M frame lens in the Ballistic M Frame 2.0. First after removing the lens slide the middle piece a bit to loosen it up, if you have nimble fingers and patience you can even remove the little center piece. I have used all my M Frame lenses in these new and better designed frames. Even the polarized lenses fit.
Great product, exactly what i was looking for.