Black Diamond Vector Helmet Synthetic Co-molded EPS foam with a polycarbonate shell keeps the weight low. Large ventilation ports for maximum airflow without sacrificing protection. Ratcheting strap with molded push buttons for quick, secure micro-adjustments. Suspension system can be tucked away inside the helmet for more compact storage in packs or haul bags. Fabric covered foam pads increase comfort. Clips permanently molded into the shell provide secure headlamp attachment.