The viking winter bushwhacker boot is perfect for any cold weather industrial activity. This boot comes with a removable foam liner that provides warmth up to -70C/-100F. It has an air-cushioned heel with Achilles tendon, ankle and metatarsal protection and has high impact, abrasion, chemical and oil-resistant nbr 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.