Deftly engineered for the demands of the modern-day mountain biker the 100% Altis utilizes our proprietary Smartshock suspended rotational system coupled with 14 ventilation ports resulting in a safe breathable and budget-friendly trail helmet. Add in the adjustable visor for a cohesive storage of all 100% eyewear and goggles and you’re ready to hit the trails. FEATURES Smartshock® Rotational Protective System 11 point. High Density EPS foam injection molded with polycarbonate in size specific molds XS/S S/M and L/XL. Massive airflow with an impressive 14 ventilation ports. Expanded coverage while still lightweight. Multi-point adjustable visor designed for maximum vision and goggle stowage. Washable moisture-wicking anti-microbial liner. Adjustable ratcheting fitment system. Nexus push release snap-buckle.