Safety footwear with the S4 rating meeting the requirements of the EN ISO 20345:2011 standard. It is characterized by metallic or non-metallic toecaps, fully enclosed heel parts, resistance to water penetration and absorption and treaded outsoles. At the same time, the boots must be made of plastic or rubber. These are mainly rubber boots that are suitable for work indoors. For outdoor work, insulated models are available as well.