Rudy Project Tralyx XL Lenses - ImpactX 2Black Photochromic SPARE LENS ONLY - NO FRAME!! TRALYX XL model...WILL ONLY FIT RUDY PROJECT TRALYX sn39 version (not Tralyx Plus!) ImpactX 2Black Photochromic...will transition from clear to dark LE397303Z XL version...this means the lens is a little deeper
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