This is a high-density polypropylene shell helmet with a 4 points plastic suspension harness. The size can be adjusted by way of a buckle adjustable from 55-62cm. It comes with a soft sweat band for comfort. It has electrical insulation up to 1000Vac or 1500Vdc (EN 50365) and comes with a 7 years shelf life from manufacturing date (details on request). It is also compatible with code SA032 Clip-On Ear protectors and comes in a range of colours.