The Petzl Vertex ANSI helmet is a comfortable, ventilated helmet proven in the field. Engineered from durable materials like ABS and high strength polyester, it features superb shock absorption achieved through deformation of the outer shell. This new version comes ANSI Z89.7 Type 1 Class E rated and features a six-point textile suspension along with the CENTERFIT and FLIPFIT systems that ensure the helmet fits securely all day long. The unventilated outer shell protects against electrical hazards, molten metal splash, flames, and fists. The Petzl Vertex Vent Helmet is an entirely modular helmet compatible with a Petzl headlamp, hearing protection, and eye protection via the EASYCLIP side attachment system.