Petzl designed its Elios Climbing Helmet with versatility in mind so you can stay safe whether you're rock or ice climbing, mountaineering, caving, canyoneering, or hitting up a via ferrata. Its lightweight ABS shell meets all the standard certifications for climbing. The expanded polystyrene liner is breathable and prevents the helmet from moving around on your dome while you climb, and the comfortable PE foam absorbs the moisture off your head so you stay dry. You can adjust the headband and chin strap for an ideal fit across your noggin. Petzl integrated shutters over the vents so you can close them when you climb in colder temps. And this helmet is compatible with Petzl's headlamps and the Vizion eye shield sold separately so you can be ready for whatever route comes your way.