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 GogglesAirEvac™ 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 Aleck™ audio systems