All weather boot with extremely good insulation against cold. Waterproof upper in a rubber/EVA-mix, made up of hundreds of thousands of microscopic air bubbles that isolate against cold and make the boot very light. Wool lining keeps your foot well tempered and dry. Removable insock in felt and outsole in TPE rubber which is very durable and provides good grip. All PAX shoes are free from PVC, Teflon, hexavalent chrome, PTFE and other fluorinated hydrocarbons.