Petzl helmet accessories Complete with solar protection filter level 2. Multiple certifications. • Petzl Custom for helmets. 95 Unit price / Unavailable. Petzl Vertex Vent ANSI Helmet . The Petzl Vertex helmet is a solid-top climbing helmet with full mounts for PPE and accessories. Packs, Bags and Cases . Shop By. The DUAL chinstrap allows the worker to adjust chinstrap strength. The high-visibility version features a fluorescent outer shell with phosphorescent clips and reflective bands for optimal visibility of the worker, day or night. bcwmzpalvcarfislivnatwubzbgunlzdhrczsaryirmwnapithlevplnqnsyovarruitjagegwsidw