Specially designed for working at height. Y-style 4-point chin strap. Wheel ratchet system. Inner expanded polystyrene foam. Hi-Visibility colour for visibility in daylight. Light and robust. Up to 7 years lifetime from manufacturing date. CE certified. Standards : EN 12492. EN 397 (Impact/Penetration/-30 DEG C). ANSI/ISEA Z89.1 TYPE I CLASS C