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Now with a modern look and more airflow, the Petzl Sirocco Helmet is even more comfortable and high performing. This updated design scales back the rim to increase the field of vision from 16 to 30 for an unobstructed view, while the new integrated air channels within the liner and foam help us keep our cool on long routes and heady moves. The atomweight of helmets, the Sirocco weighs just 6 ounces for strain-free, daylong comfort.