Standard: CE EN397, EN50365. ANSI/ISEA Z89.1-2014 Type 1 Class E LT. EAC. Also meets all requirements of standard EN12492. Petzl's ergonomic, ventilated safety helmet for work. Designed for versatile use in both fall-risk conditions and flat-surface work. Particularly suitable for construction work, industrial needs, confined spaces, rescue work, asphalt work, snow removal and other heart-pumping jobs where it gets hot. The ventilation openings on the side can be easily closed from the outside, for example in the event of rain or snowfall. The helmet can be quickly attached to Peltor Optime II hearing protectors , the new Petzlin Vertex eye protector , the Protector visor cover, the Vizen full-face shield or the Vizen Mesh mesh visor using the included EasyClip quick-attach pins, which are replaced with the black pieces on the sides of the helmet. The helmet is compatible with Petzli headlamps and headband headlamps.