PROTECTION: Hybrid shell construction blends a durable exterior with a lightweight in-molded shell for durability where you need it most while keeping the helmet light, Zonal Koroyd coverage for lightweight, energy-absorbing and ventilated protection, Dual regulator climate control offers easy, one-handed front and rear vent adjustment, Certification: ASTM F 2040, CE EN 1077:2007 CLASS B
FIT: BOA 360 Fit System offers the most adjustable fit with the turn of a dial for on-the-fly micro-adjustability, Round Contour Fit
INTEGRATION: Designed for ultimate integration with Smith goggles for maximum comfort and venting, AirEvac ventilation system integrates with Smith goggles for fog-free lenses
FEATURES: 21 vents, Removable Snapfit SL2 ear pads add warmth and are audio-chip compatible, Aleck audio system compatible