The Muddy 17" Insulated Boots feature a hand-built vulcanized rubber construction and 5mm neoprene for 100% waterproofing. Designed for warmth, they offer 1000g insulation with a comfortable neoprene shaft and an EVA midsole. The boots also have a proprietary outsole for traction providing a 4x4 grip and slip resistance for great traction in all weather conditions.