The WT Texapore Mid boots from the Dromovent series are a great choice for brisk walks in cool and cold weather. Warmth is subjective and depends on many factors, but the manufacturer mentions temperatures as low as -40 degrees Celsius in the product information. We recommend testing the boots' features first in milder cold conditions. - Waterproof Texapore membrane - Texawarm and PrimaLoft insulation fibers - Sole material does not harden in the cold - EVA midsole for shock absorption - Fair Wear Foundation product The product does not contain PFC compounds.