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.Key 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.