From snowy trails to icy walkways, Columbia's Expeditionist Extreme Boot solidifies our steps and warms our toes. The heat-reflective lining and heat-trapping synthetic fill work together for optimal coziness inside, while the breathable waterproofing keeps our feet comfortably dry as we saunter through slushy puddles. Wherever we wander, the sticky lugs bite onto wintry terrain to keep our feet from slipping out from under us.