Comfort rated from -76°F/-60°C to keep your feet warm in the winter months. Removable inner Boot System provides lightweight, thermal insulation and moisture management. Completely waterproof. Allows for a great fit on your foot. Thicker shaft allows for increased durability while still allowing for flexibility to make maneuvering easy. Created with quality compounds. Perfect for serious hunters, outdoor people that spend hours in the cold, or those that want an all-purpose winter