Kamik Women's Brooklyn Snow Boot 50% Nylon / 50% Polyester (Faux Fur) Imported Synthetic sole Shaft measures approximately 9" from arch Heel measures approximately 1.5" Platform measures approximately 0.75" Boot opening measures approximately 11" around Dri defense 100 percentage waterproof membrane lined keeps feet warm and dry Comfort rated to -40f Dri defense 100 percentage waterproof membrane lining keeps feet warm and dry Comfort rated to -40f Waterproof nylon upper