
Just put a Seek Optics (Black Iridium) lens in my Oakley Radar Path frame and it fits like a glove. I'm sure there are some quality differences between these replacement parts and OEM Oakley, but I can't see them for sure. In fact, I weighed the lenses and found a difference of just 0.03 ounces (Seek 0.34; Oakley 0.37). Installation isn't difficult at all, but I suggest beginners watch one of the online help videos. Looking at the two lenses in the light just shows that I really need to replace the Oakleys ASAP (okay, I really should use a case or case). Time will tell how durable Seek lenses are, but for a quarter of the cost of an OEM replacement, they're fine with me. I highly recommend them.

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