1000 Gram Thinsulate™ Ultra Insulation is what you will need going after those big bucks. This boot also includes the Ultra Dry Waterproofing System that combines a moisture management lining with seam-sealed leather. Besides being warm and waterproof enjoy great traction with the Ice Auger sole Features: ●UltraDry™ Waterproof Construction. ●Brown Frisco Leather. ●Brown Nylon Fabric #3863 / New Mossy Oak® Break-up® Nylon Fabric #3860. ●Moisture Wicking Nylon Lining. ●1000 Grams Thinsulate™ Ultra Insulation. ●Steel Shank. ●Ice Auger Sole Comfort rated to -100°F (depending of activity level) Imported.