This Viking Extreme Warm boot features an award-winning, kid-tested and parent-approved design that delivers all-day comfort for active kids. This lightweight Elastopan construction is 100% PVC-free and 40% lighter than comparable PVC or rubber boots, making these waterproof boots easier to wear and carry. This insulated build combines a thermo membrane, PU upper, TPU/PU midsole and a wool/polyester lining with a detachable polyester/wool insole for reliable warmth on cold days. This rugged outsole and secure drawcord top seal out snow and slush, perfect for winter walks, rainy play and outdoor adventures. This premium-feeling kids boot balances durability, easy care and practical insulation for parents seeking dependable cold-weather footwear.