Women's Snow Boot -40°F Temperature Rating Waterproof Nylon Upper with Faux Fur Cuff 200B 3M™ Thinsulate Synthetic Insulation™ and Moisture Wicking Faux Shearling Lining Adjustable Bungee Lacing System Removable Kamik Comfort EVA Insole with Antibacterial Treatment Waterproof and Flexible Synthetic Rubber Shell Heel Counter Lug for Easy Removal and Snowshoe Strap Retention ICEKISS Dual-Density Synthetic Rubber Outsole The Momentum2 is back for another season helping us stay dry and warm with  Thinsulate Synthetic Insulation™ and a -40°F temperature rating. Kamik Women's Momentum2 Boot