VERTEX ST br Industrial safety helmet br Comfortable and durable helmet, meets the requirements of the EN 397 industrial helmet standard. br br * Chinstrap designed to break away if snagged : opens at 25 daN (EN 397 industrial safety helmet standard). br * Polycarbonate shell, resistant to impact and wear (meets EN 397 industrial helmet standard and EN 12492 standard). br * Meets all optional requirements of the EN 397 standard: br o lateral deformation, br o use at low temperatures (down to - 30 °C), br o electrical insulation, br o molten metal splash. br * Customizable: br o side slots for mounting hearing andor eye protection, br o the cut of the shell contours over the ears to fit standard hearing protection, br o four headlamp clips. br * Complete and simple adjustment: br o single headband size adjustment wheel, quick and precise to manipulate even while wearing gloves, br o adjustment wheel and rear chinstrap attachment point have two height positions, to adjust the position of the straps on the neck and around the ears, br o chinstrap buckles can be adjusted forwards and backwards. br * Comfortable: br o webbing suspension system, br o thick, replaceable foam headband.