A winter boot for women who demand the best, the Baffin Icefield is a versatile boot that is suitable for outdoor winter sports and great for extreme conditions! ; 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°F/-100°C. Measurements: ; Weight: 1 lb 10 oz ; Circumference: 19 3 4 in ; Shaft: 12 in ; Product measurements were taken using size 7, width B - Medium. Please note that measurements may vary by size.