First of all, the ski touring helmet should be light and well ventilated. Especially the ascent on a ski tour is fairly exhausting and makes you sweat a lot, so the helmet should let enough air through to your head. Additionally, a ski touring helmet should protect the side of your head. The helmet not only protects against possible rockfall, but also increases impact protection when skiing downhill. The expert Ötztal sports shops will be happy to advise you on the right choice of ski touring helmet.