The warm protection and comfortable flexibility of the Baffin Escalate boot will make every outdoor activity an adventure. Waterproof, breathable nylon shell upper. Drawstring snow collar helps keep out the wet elements. Eco Down high-loft insulation provides incredible warmth on cold days. Drawstring and toggle for tightening at ankle. Form fitting, fixed-lined inner boot system. Removable, cushioned footbed with Thermaplush foot lining for comfortable warmth. High-grip Polar rubber outsole with Hex-Designed AirGrip for excellent traction and stability. Temperature range: 10ºC/50ºF to -30ºC/-22ºF. Imported. Measurements: Heel Height: 1 1 4 in Weight: 11 oz Circumference: 15 in Shaft: 11 1 2 in Product measurements were taken using size 8, width B - Medium. Please note that measurements may vary by size.