A re-energized update of Columbia's winter classic, these boots are the ones for cold and wet weather. They turn snowy slogs into cakewalks thanks to a combination of waterproof construction, 400g insulation, an Omni-Heat thermal-reflective lining, and a grippy rubber outsole. Injection molded rubber shell/outsole., Waterproof PU coated leather and textile upper. Omni-Heat reflective lining. 400g insulation. Omni-Tech waterproof breathable construction. Bungee closure system.