The latest version of Petzl's incredibly light Sirocco climbing helmet has a subtle improvement in the shape of the brim, giving you an extra 14° of upwards vision. Petzl's Sirocco uses an Expanded Polypropylene foam for the body of the helmet, with a rigid crown piece in injected expanded polystyrene. The Sirocco protects from both top and side impacts, so it's not just for falling rocks but also for protection from the kind of impacts you're likely to get while actually falling. Ventilation is improved, with longer slots. Webbing attachment straps are light, simple and comfortable.