Shell Material: 4-piece in mold construction Ventilation: DOV, STACC Fit Adjustment: dial Visor: adjustable Certifications: Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older Set the trails on fire in full confidence. As trail riding and bikes evolve, so should the performance of your helmet. The Trailblazer is the latest evolution of our pioneering multi-piece variable elasticity shell technology, leading the way in protection performance. Now you can blaze trails thought to be unrideable. With trickle-down shell technology from the proven Bushwhacker, this helmet provides strength and performance with its 4-piece variable shell construction. The Trailblazer introduces an updated design with a contemporary take on the Sweet Protection DNA featuring a new visor placement and a progressive style. The visor can be adjusted with the new visor mechanism, and the helmet also comes with a completely new Occigrip turn-dial system and STACC ventilation.