The Proflex (and the Flex-7 and all those others) use the Spectra thermal goggle system, which means you can get tinted lenses for anything that uses the Spectra. You can put them in your Proflex, and your buddy can use them in his Flex Seven. JT has quite the compatability system
only if they are the same size, like the spectra which has a 260* site of vision, yiou could uinterchange a spectra lense through any mask that accepts taht size
does the colored lens do anything besides making it look cooler or no...and by the way...b-rock is your name brock...because if it is, then you have the coolest name ever (along with me)
they look cool, and plus its tinted, so the sun doesnt affect your eyes as much. its similar to tinted windows in a car... personally i like clear lenses tho becuz i like the normal vision