The Ohio Snow Boots are warm and snowproof. The IsoTherm lining has been tested to keep your feet warm in temperatures as low as -20°C. The durable womens boot is a stylish and practical addition to your winter wardrobe. Isotherm - Densely packed fibres to retain heat & warmth without adding weight or discomfort Snow Proof - Treated with Durable Water Repellent (DWR), suitable in packed snow Thermal Tested -20 °C - Laboratory tested. Health, physical activity & perspiration will affect performance Faux Fur - Synthetic fur adds warmth and comfort, style and looks great too