Bogs Women's Summit Sweater-W 100% Neoprene Imported Rubber sole Shaft measures approximately 12.5" from arch Heel measures approximately 1.25" Boot opening measures approximately 13" around Waterproof and machine washable Plush lining for extra warmth Dura fresh lining activates to fight odors Max-wick moisture wicking lining Comfort rated to 14 degrees fahrenheit or -10 degrees celsius