The Stahlhelm was the standard helmet used by Germany during the First and Second World Wars. The first production model of the Stahlhelm was the M1916 which featured a solid steel construction and side ports for additional protection. Inside the helmet was also a leather strap and leather padding for comfort. The helmet proved to be quite a reliable design and showed great promise with German troops. However, the helmet was slightly more expensive to mass-produce than Allied counterparts when it was introduced.