Used once! UPPER: 5" high boot with waterproof full grain leather. Seam-sealed construction. INSULATION: 200g Thermolite® insulation. Rates to -25°F/-32°C during active use INSOLE: Heat reflection frost plug. SHELL: Injection molded rubber with snowshoe binding lip. OUTSOLE: Non-marking Omni-Grip® rubber compound with minimal-loading lug tread pattern.