The North FaceR Verbera Utility Boot for men is a waterproof, cold weather, leather utility boot that is rated to 40F. Utiizing PrimaLoftR Silver for a high performing, eco friendly insulation for the coldest conditions. Designed for extreme conditions, the Verbera Utility Boot is made of premium materials and designed for carrying heavy loads over varied terrain. With maximum support and rugged durability, the men's Verbera Utility Boot is built for the extreme. Features: Upper: Waterproof, BLC compliant full grain leather upper Waterproof construction for the ultimate weather protection 400 g PrimaLoftR Silver Insulation Eco recycled insulation Anatomically engineered, injection molded, waterproof TPR shell Rustproof hardware Gaiter compatible D ring Bottom: NorthoticTM 2.0 dual density footbed with softer heel and forefoot cushioning pads Compression molded EVA midsole Durable TNF Winter GripR outsole IcePickR temperature sensitive lugs for increased traction Last: TNF SB 01 Avg. Weight: Pair: 3 lbs 8 oz 1616 g based on Men's 9. Technology: IcePickR: Molded on the softer TNF Winter GripR outsole, IcePickR rubber hardens when temperatures fall below freezing to provide ultimate biting traction. NorthoticTM 2.0: Biomechanically designed 5 mm molded EVA provides underfoot comfort. PrimaLoftR Silver Insulation Eco: Uses post consumer recycled materials to create the highest performing eco friendly insulation available. TNF Winter GripR: A tacky rubber compound designed to remain soft when the temperature falls below freezing. H2O ProofTM: This waterproof construction method utilizes seams sealed, waterproof materials to provide an impermeable barrier to the elements.