Ultra-lightweight helmet for climbing, mountaineering, and ski touring Remarkably lightweight for ambitious climbers and mountaineers. The SIROCCO helmet was designed to give you an exceptional weight-to-protection ratio. Lower in the back, the design provides greater coverage and offers enhanced protection over the entire head. Optimized volume and excellent ventilation provides maximum comfort. SIROCCO is also designed for ski touring, with the CE certification for ski touring helmets (please note this helmet does not meet the requirements of the EN 1077 standard for alpine skiing helmets).