About this item PROTECTION: Advanced ABS construction for increased protection and all-around durability, Dual certification all-season use, 14 fixed vents for consistent airflow, Certification: ASTM F 2040, CE EN 1077:2007 CLASS B, CPSC, CE EN1078 FIT: Self-adjusting lifestyle fit system flexes to match your head shape for maximum comfort, Bombshell ear pads for form-fitting comfort 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: Removable goggle strap lock for streamlined shell when goggles are worn under helmet, Aleck audio system compatible INCLUDED: Smith helmet bag ? See more product details