Safety helmet for work at height, industrial activities and building construction. Light-weight helmet, at ease and neatly ventilated with wheel adjustment system. Chinstrap designed to open within the event of suspension and save you choking: it opens between 15 and 25 daN (agree to CE EN 397 usual). Size adjustment wheel simply handable even with gloves on. Shell with ventilation holes. Clips for mounting headlamps. Pre-drilled holes for the installation of the visor and ear muffs and radio. Internal webbing suspension system with removable and washable padding. Universal size (52-63 cm). Top quality product, utterly made in Italy!