Whether it's hard charging trails or hammering hills, the 100% altec is the rider's choice for an incredibly lightweight, ventilated and protective trail helmet. Featuring the smartshock® rotational protection, the altec's 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 and 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 and goggle stowage. Washable, moisture wicking anti microbial liner. Adjustable ratcheting fi tment system. Fidlock snap magnetic buckle