Ultra-lightweight climbing and mountaineering helmet With a maximum weight of 165 g, the SIROCCO helmet becomes the new standard in terms of lightness. The monobloc construction minimizes helmet weight while retaining excellent impact resistance, due to the mechanical properties of expanded polypropylene (EPP). The textile adjustment system also contributes to its lightness. This helmet comes with a new magnetic buckle which allows the chinstrap to be attached with one hand. The SIROCCO helmet also has excellent ventilation distributed around the helmet. Monobloc shell of expanded polypropylene (EPP) and textile adjustment system for an ultra-lightweight productExcellent ventilation distributed around the shellEntirely adjustable and adapts to all head shapes Removable comfort foam is quilted and lined with absorbent fabric; washableMagnetic buckle allows the chinstrap to be attached with one hand (Petzl patent)Two lateral holes for VIZION visorTwo hooks and rear elastic for