Whether its hard-charging trails or hammering hills the 100% ALTEC is the riders choice for an incredibly lightweight ventilated & protective trail helmet. Featuring the Smartshock Rotational Protection the ALTECs patented Smartshock elastomers begin defusing rotational crash energy immediately upon impact. FEATURES Smartshock Rotational Protective System (14 point). Multi-Density EPS foam injection molded with polycarbonate in size specific molds (XS/S S/M & L/XL). Massive airflow with an impressive 15 ventilation ports. Expanded coverage while still lightweight. Integrated sunglass storage system. Multi-point adjustable visor designed for maximum vision & goggle stowage. Washable moisture-wicking anti-microbial liner. Adjustable ratcheting fi tment system. Fidlock SNAP magnetic buckle (NEW for 2021).