As a real replacement for original MJ lenses, they are missing. They're significantly (18%) thinner (0.057" thick vs. 0.070" on the MJ), have different lens coatings (whether they scratch more easily remains to be determined), and there's noticeable object distortion. viewed through the lenses at the edges. Also, only 3 of the 4 holes in the lenses matched the mounting screws on the frames. A plus? They cost about half the price of MJ replacement lenses and allow you to fit them yourself instead of shipping MJ sunglasses. EDIT: Lenses are about 1/3 the price of the originals ($25 vs $75).
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