At Smith, we design helmets and goggles to work together as a fully integrated system.Ultimate integration starts with the precise fit of the Smith goggle and helmet. For the helmet line, the most important factor in integration is the AirEvac ventilation system. This is the bridge that allows goggles and helmets to function as one system, venting warm moist air away from the goggles, through the helmet climate control system and ultimately away from the head. Our helmets are designed to match the curvature of the goggle frame, eliminating "gaper gap" and allowing precise alignment between the helmet AirEvac and the goggle venting systems.