Kamik Women's Mcgrath Snow Boot 100% Synthetic Imported Synthetic sole Shaft measures approximately 11" from arch Heel measures approximately 1" Platform measures approximately 0.5 inches Comfort Rated: -40 DegreeF Waterproof nylon and synthetic leather upper with gusset tongue Fixed 200B 3M Thinsulate and foam insulation Moisture wicking fleece lining PEAK synthetic rubber outsole