The hard hat shell is manufactured from ABS material. It is lightweight, extremely comfortable and fits the wide range of head shapes and sizes. The 6 point terylene cradle harness system offers unrivalled comfort without compromising performance. The safety hat features side and rear ventilation for optimum air movement inside the shell, reducing helmet temperature by an average of 2-3°C. The safety helmet is ideal for working when there is a high degree of activity, such as motorway maintenance.