This adjustable helmet is great for challenge courses, ropes courses, climbing & mountaineering The Ecrin Roc is fitted with 2 adjustment wheels for a perfect fit. Supplied with 2 foam headbands (choose thick or thin foam according to size). Thanks to the numerous holes in the shell, it offers perfect ventilation. The chinstrap is also easily adjustable thanks to the ingenious patented buckle. A headlamp can be easily mounted because of the four clips fitted to the shell. Meets ANSI Z89.1 as well as CE, and EN 12492.