For winter sports or severe weather travel, the Baffin Impact boots are made with quality materials for the women who demand the best! Dual-density, cold resistant, integrated polyurethane base. Reflective piping stands out for night visibility. 7-layer inner boot system with Thermaplush. The Baffin multi-layer inner boot system creates a warm boot that can be used for extreme exertion because body moisture is wicked away and expelled from the boot, keeping the feet dry. Thermaplush is a comfort layer next to the foot that is soft yet durable. This velvety smooth innermost material wicks moisture away from the foot. Waffle/ air foil insole provides long-wear cushion. High traction, premium polar rubber outsole. Temperature rated: -148 degreesF/-100 degreesC. Measurements: Heel Height: 1 1 2 in Weight: 2 lbs 1 oz Circumference: 19 in Shaft: 12 in Product measurements were taken using size 6, width B - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.