Description of Petzl Elios Climbing Helmet This low profile helmet is easy to adjust, comfortable and well-ventilated. The improved dial adjustment system is quick and easy to use, even when wearing the helmet. Using a combination of shell and foam technology, it's perfect for rock climbing, ice climbing, mountaineering, canyoning and caving. Lightweight and durable helmet Features: Injection molded ABS shell is both lightweight and durable Expanded polystyrene liner absorbs impacts Adjustable chinstrap, nape height and headband for an extremely comfortable fit Easy-to-use molded adjustment wheel quickly dials in the headband size, even while the helmet is being worn Chin strap position adjusts forward or backward and redesigned side-release chin strap buckle is positioned off to the side for comfort Narrow polyester webbing straps offer improved comfort Headlamp attachment with 4 optimally placed clips Compatible with VIZION face shield Injection molded ABS shell Expanded polystyrene foam liner Polyester webbing straps 3-year guarantee CE EN 12492/UIAA