Perfect for professionals in crafts, in industry, on construction sites and in companies as well as for home and craftsmen. Made from high quality ABS material, even higher level of resistance to shocks and scratches, additional protection from lateral deformation. With this extremely robust work helmet according to professional industry standards, you can perfectly protected from falling objects. Work helmets do not have to be uncomfortable. The helmet has generous ventilation holes that ensure optimal ventilation. This helmet is suitable for people with a head circumference of 20.47-24.80 inches. It has an adjustable chin strap that you can adjust to fit yourself.