featureshybrid shell constructionzonal koroyd® cover for lightweight, energy-absorbing impact protectionthe mips® brain protection system reduces the rotational forces caused by oblique impacts to the headcertification: astm f 2040, ce en 1077:2007 class b, cpsc, ce en1078designed for ultimate integration with smith gogglesairevacâ„¢ ventilation system works with your smith goggle to keep lenses fog-freeboa® 360 fit system for a perfectly adjustable fit21 vents with easy, one-handed adjustmentremovable, audio-compatible snapfit sl2 ear cushionsxt2® antimicrobial liningcompatible with aleckâ„¢ audio systems