For the first time, Quechuas Bionnassay range (specialist mountaineering products) now boasts a specific mountaineering safety helmet. Whats more, this new helmet satisfies demanding safety standards for both mountaineering and cycling. Lightweight, well ventilated, and extremely resistant, it enables you to flit from one activity to the other or to cycle to your departure point in total safety before setting off on a trek. The holes in the main structure of the helmet provide excellent ventilation but, at the same time, minimize the risk, specific to mountaineering, of being penetrated by falling objects.