Half jacket 20 xl replacement lensesclear black iridium photo chromic sport performance lens for flat to bright light neutral transmission for truer color perception across a wide variety of light conditionsspecificationslight transmission activated 10 faded 66conditions overcast to sunnyprotection index activated 3 faded 1neutral contrast neutralcustomize the look of your half jacket 20 xl eyewear and get the best optical performance for where you use it most all r