The BV2S helmet addresses many of the problems that have plagued snowmobilers for decades. Fogging is prevented by the patented breath evac system that exhausts the rider's exhale directly outside the helmet. A spring-loaded sun shield addresses the frequent changes in light conditions by means of an easily accessible external actuator that allows for rapid adjustments while moving at high speeds. The sizeable red back light and the side-mounted light beam increase visibility on the trail and make the rider clearly visible from a distance. The BV2S offers the comfort and thermal protection of a full-face helmet while the fully articulated jaw piece provides the freedom of a traditional open-face helmet.