For comfort into the negative digits, trust the Kamik® Men’s NationPro waterproof winter boots. These lightweight synthetic rubber boots are lined with 200g insulation and outfitted with a gusset tongue to seal out moisture from snow and slush and lock in body heat for lasting warmth. TECHNOLOGY: Removable 200g 3M™ Thinsulate™ insulation liner DESIGN: Waterproof and flexible synthetic rubber shell Waterproof leather upper Waterproof gusset tongue Moisture-wicking lining SNOWTREAD synthetic rubber outsole DETAILS: Comfort rating: -40°F Height: 11.5'' Weight: 3.6 lbs per pair Country of Origin : Imported Style : WK0586 Brand : Kamik Web ID: 18KMKMNTNPRBLCKXXFBO