Lightweight helmet for work at height and rescue. Features include comfort foam that is barely felt on the head, a polystyrene liner for absorbing shock, a CenterFit adjustment system which adjusts the headband and keeps it centered on the head, side slots for mounting hearing protection, inserts for accepting a VIZIR visor, slot for mounting PIXA headlamp, four clips for mounting a headlamp with an elastic headband, and a chin strap for limiting risk of losing helmet during a fall. The unventilated shell ensures protection against electrical risks and molten metal splash. Meets ANSI Z89.1-2009 Type I Class E Standard. Meets CE requirements of EN 397 and EN 12492 standards in terms of protection against mechanical impacts. Meets CE requirements of EN 397 and EN 50365 standards in terms of electrical insulation. Meets optional CE requirements of the EN 397 standard: molten metal splash, lateral deformation, use in cold temperatures.