Sorel Caribou Sorel Caribou women's waterproof winter boot moves at your pace! With removable 9mm ThermoPlus? felt InnerBoot, you'll be staying warm this season! Sorel boots are reliable and ruggedly handsome.Women's mid-calf waterproof winter bootLace-up construction with 4 eyelets9 inch shaft with 14.5 inch circumference1 inch heelRubber lug outsoleAcrylic and wool blend cuff at top of shaftWaterproof textile and leather upper