The Viking Rigger FR boot has a fire retardant upper that provides flame and thermal protection. Sole heat resistant to 300C/527F. It has abrasion, oil, chemical slip and heat-resistant chloroprene lug soles. Viking boots are different from other boots because we focus on safety, not as a guide – but as a philosophy, making sure every boot we produce exceeds the standards and embraces comfort and wellness for the wearer. We work with miners, foresters, fishermen and firemen to understand their comfort issues and bring their responses to market in our boots.