They are made from high-impact-resistant materials like ABS or polycarbonate.
The suspension bands inside the helmet spread the weight and force of an impact over the top of the head.
Hard hats are available in different styles, such as cap hard hats with a short front brim and full-brim hard hats with a brim that goes all the way around.
They are often used on construction sites, in factories, and in other industrial settings.