Distinguishing feature of the lenses
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Goggles and lenses V2
If the REX SPECS lettering is embossed in the frame, you have the new and improved V2 version . Only lenses from the V2 line fit here
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Goggles and lenses V1
If the REX SPECS lettering is printed on the lens, you have a pair of glasses from the first generation V1 . Only lenses from the V1 line fit here
