Made In Canada by those who know snow and cold! The GREENBAY 4 is the most comfortable pac boot available. Kamik's Thermal Guard Liner keeps feet warm & dry by trapping warm air in and wicking moisture away from the foot. Temperature rated to -40F and made in Canada, make it a great choice for any winter activity.FeaturesDuration 600 Nylon Upper Removable 8mm Thermal Guard Liner Moisture Wicking Lining Lace Lock Snow Collar Adjustable Midfoot Velcro Strap Waterproof & Flexible Synthetic Rubber Shell PRIME Outsole Maximizes TractionItem No. 3033884 56552380121 26127100047 NK0199S