The Kamik Sienna 2 women's boot features waterproof bottoms with lightweight RubberHe outsoles that offer superior traction and flexibility. The 3M Thinsulate insulation and the extra-comfortable removable insoles retain warmth. This versatile boot is made of a combination of waterproof leather and water-resistant flannel upper. It includes moisture-wicking fleece lining insole and molded antibacterial EVA footbed outsole. The boot is comfort rated to -20°C.