100%\'s ALTEC is the advanced rider\'s choice for confidence inspiring, protective, lightweight and ventilated All-Mountain helmet.Featuring Smartshock® suspended rotational system, the ALTEC\'s Smartshock® elastomers reduce energy transfer to the brain over a wide range of speed and impact types. Key Features: Smartshock® - 14 Point Smartshock® Rotational Protective System.,Multi-Density EPS foam - injection molded with polycarbonate.,Massive airflow - With an impressive 15 ventilation ports.,Altec 350g / M-Shell - Expanded coverage while still lightweight.,Sunglass Storage - Integrated sunglass storage system.,Multi-point adjustable visor designed - For maximum vision and goggle stowage.,Anti-Microbial liner - Washable, moisture-wicking .,Adjustable Ratcheting Fitment System.,Nexus Push Release Snap-Buckle.,Size-specific molds - XS/S, S/M, and L/XL.,Material: 70% Expanded Polystyrene, 20% Polycarbonate, 5% Polyester, 5% Nylon..