easy to defy the cold and snow in Columbia Sportswear's Bugaboot Celsius boots, made with waterproof breathable Omni-Tech protection, Omni-Heat® thermal reflective lining and 400 g synthetic insulation. Omni-Tech® waterproof breathable membrane blocks precipitation and allows perspiration vapor to escape, so you remain dry inside and out 400 g synthetic insulation Omni-Heat® thermal-reflective lining reflects and retains body heat for an average of 20% more warmth Waterproof polyurethane-coated leather and textile upper Faux-fur inner collar Bungee lacing Cushioned footbed Injection-molded rubber shell Rubber outsole